I was solo'ing a tier 3 run and this happened when I tried to put down a key to deal with them pesky turrets....

http://i724.photobucket.com/albums/ww243/KyleHardstyle/spiral_2011-06-19...

http://i724.photobucket.com/albums/ww243/KyleHardstyle/spiral_2011-06-19...

The key stuck to my arm, no turret could fire and the spikes where stuck down, I couldn't drop the key either or use it on the gate...
It ruined my tier 3 run D: