I don't see how it could be a crime anymore than the Jedi Strike team going over to apprehend, or kill Revan. The actual decision to go over to apprehend Revan wasn't one. It was a decision to assassinate him, but one balanced on the grey anvil of morals the Jedi Council seems to rock itself back and forth on.
In times of war, we must accept an adjustment of the most fundamental values. Even the values we may be going to war over. I can't say restoring him as an LS character was a smart thing to do, because there was no intelligence in the decision.
There was simply opportunity and luck. There was, however, Wisdom in being able to act in the manner they did and do what they did. I don't think it was ever a crime, though.
There was no mercy involved. They could have easily left Revan dead, or he could have died as a result of his wounds or their manipulation.
Chances are, however, the strike team would not have stood against Revan. Bastila's physical skills were no match for Revan, and she was the leader of the group. Maybe, she could have used her influence on the other's, but unless they sent truly remarkably gifted jedi guardians with her, or Knights that studied a style like Vaapad, a Sentinel or Consular would not have been able to stand against Revan. Bastila, and the strike team, would have failed.
It was simply dumb luck the situation played out like it did. Which makes the story even more intriguing. KOTOR1 was brilliantly written. KOTOR2 is like any middle-sequel - mildly flat, with a few brilliant moments that make you want to find the conclusion in KOTOR3.
Assuming Revan is a LS male, there were plenty of previous temptations and corruptions that Revan had to overcome to become a strong LS character (which as a redeemer of the Republic and Jedi you HAVE to assume he became...if he was DS, he would be the worst of the Dark side...Jolee Bindu represents the middling factor, or the Grey Side).
By the very nature of being a strong LS character, and knowing they already have a sound set of morale values, Revan would've stood by his position with or without Jolee or Juhani's influence.
The Jedi Order created Revan as an enemy. His experiences at Malachor V, however, did something to Revan's allignment - but it may not have been mystical in nature. I think something more common may have happened completely unrelated to the war, or to Revan's character.
When Revan went to war, the Jedi Order blamed the war for turning Revan to the dark side - of corrupting his values. Revan's values weren't corrupt, he went to war because he saw weaknesses in the Council's decision...and the Council was hedging it's bets, and did not feel Revan was as strong of a stategists and tactician as he turned out to be.
Revan was largely in control of the war against the Mandalorians. Had he not met them before they were ready to engage the Republic and Revan's forces, the opposite would've been true. So timing here was instrumental in allowing Revan the time it took to figure the Mandalorians out. The Mandalorians were unprepared and not strong enough to really gain a critical mass - the critical mass they would've obtained had the Jedi Council intervened when it wanted. When it did eventually come to final battle at Malachor V, the Mandalorians foolishly let their wunder lust and warrior mentality commit themselves to a final all or nothing confrontation, when they should only sent a moderate force to keep Revan busy, while the remaining forces continued their conquest.
You can understand the Council's rservations and decisions. Revan knew this, and knew the Council's decision to wait was the wrong one. If the objective of the Jedi Council is to protect the Republic, it was clearly the wrong one. If it is the objective to protect the Order, then it was the right one.
In the end, you don't go to war with the Mandalorians, under the auspices of saving the Galaxy, then come back and decide to kick the crap out of the Republic and Jedi Order just because he faced some form of judgment or punishment. And Starforge or not, even if Revan's allignment turned to the Darkside, the decision to take over the Galaxy is still inconsistent. Revan found the Starforge well after the Mandalorian war, out of a decision he never made.
So something turned Revan against the Jedi Order and Republic. Back on topic...
I think Revan's experiences on Malachor V confirmed, or introduced something for him. Inserted a piece of knowledge that was missing that confirmed for him the Nature of the Force. I think the Jedi Order itself knew, or understood, despite what they were saying, what that element or piece of knowledge was and had originally forbid him from going, lest he find it.
By and large, the Jedi Order created Revan not only as an Enemy, but also as a Sith Lord. Possibly, to keep him from finding the truth or information, the Jedi Council tried to assassinate him under the auspices he was already a Sith Lord. But that may have been very much furthest from the truth. There is proof of this corruption in Atris and other Masters on the council.
The very thing they wished to prevent, they had created. And when they had the opportunity to re-program Revan, you could argue this was their way of attoning for past mistakes...their Redemption.
But until KOTOR3 is released, that's all speculation. ;-)