Revision 1 is out. This should fix the getting stuck problem. Thanks for the feedback. ;)

Yeah, nicely done!
I stuck in the ceiling once as well and survived but ... stuck. Second place to stuck is at the cubus-switch after running out of time. And even I don't like timelimits much, I like this chamber much and how you made the timelimit anyway. Keep on it! ^_^
Looking forward for your comment on a further chamber of mine. Maybe Circle of Alive , but this is pretty hard, even it's small. And no time limit ;) But you always can try an easier one of course.

Protip: Do not F6. lol. I forgot this was timed and was almost at the exit when I got zapped. End up having to completely restart. Only problem I found is that there is at least one place where you can get stuck that I remember (In the ceiling area across from the exit.) Nicely done.