Weird. What browser? I'll confess that I threw this together and haven't done much testing, but all seems well on Chrome, Firefox, Safari, and Mobile Safari.
It continually and randomly decided what the outcome was for about 5 minutes before freezing for me. (On Chromium)
Ah. Sorry about that. I haven't had a chance to test the lobby/random opponent matchmaking feature under stress, and it's not working as I'd hoped. You should be able to send the URL to a friend and play them, though. (Or open another window and play yourself to try things out.)
Another bug: I can no longer choose lizard (or at least lizard no longer shows up as an option). FF on Win7