This is one of the action bugs the devs know about but they struggle to find the cause http://forums.obsidian.net/topic/76085-grimoire-slam-says-always-already-activated/
It is intended that you can change your opinion in the end. You will get six choices, not only four. I would suggest to stick to the right choice and bear the wrath of Hylea because the kind of punishment will be probably unexpected.
True.
Test for Heritage Hill
https://d1079ywfijtdjs.cloudfront.net/eternity/media/wallpapers/heritagehill/pe-wallpaper-heritagehill-851x315-facebook.jpg
https://d1079ywfijtdjs.cloudfront.net/eternity/media/wallpapers/heritagehill/pe-wallpaper-heritagehill-520x260-twitter.jpg
From http://forums.obsidian.net/topic/65617-adam-at-work/page-6?do=findComment&comment=1428170
Also http://pillarsofeternity.gamepedia.com/Fighter?cookieSetup=true#Abilities