Just registered an account to report this problem as well. I've played with my girlfriend in split screen co-op for about 10 hours. My controller (main profile) becomes stuck once or twice per hour approximately. Sometimes it gets unstuck after 20-30 seconds, but that is not the case most of the times. If I switch it off and on, the game doesn't recognize it all, so the only solution is to close the game "manually" with alt+f4 and reload it. It is very frustrating to wait for so long, so often.
We would appreciate a fix asap because this game is freaking awesome!