So, I threw a (pretty well aimed if I do say so myself) Banana Bomb at a couple of ememy worms - and it wouldn't stop exploding! The timer also froze and the explosion animation and sound effects just wouldn't stop...

http://imageplay.net/img/tya22289405/worms.jpg

Nice one :P Total destruction :)

This is bugged and should be fixed soon. Thanks for the report & image, it's very helpful! :)