I guess this could be considered a spoiler so if you haven't finished the game or don't care to be spoiled then you should stop reading now.
I'm curious, is there a second part to the game? At the part where you choose to either run and try to escape with Wheatly OR continue the tests with GLaDOS. I chose to try to escape.. Are you forced into the escape or is there another part of the game for those who decide to continue with the tests?
I don't want to play through it again if there you are forced into the escape, but if there is more to it then I'll gladly go back to check it out