Oh God, don't remind me of Deadly Shadows' collision detection. Every bloody time I went down the last elevator in Captian Moira's mansion, my leg got stuck in the chain. It takes a good seven to ten minutes of jumping and leaning to get out of that one.
As for the collision on Bloodlines, I've found that if you equip a melee weapon, face the direction of freedom, and keep swinging, your character will take a step every three swings and eventually get out. It takes a minute or two, but if all your saves are old, it's worth it.
Personally I think Bloodlines is great. I've restarted with a Malkavian, and I have to say the dialogue is absolute gold. "I like explosions. They remind me of my childhood."