L4D2 seems to have introduced a bug whereby players get stuck in certain places on a variety of maps... usually requiring the assistance of a friendly hunter/charger/jockey to free them up.
I've added a mod to the server that if someone gets stuck they can use it to move themselves a few inches and get unstuck
Command usage, in chat:
!stuck
Admins (all =SM=) can also usem in the console:
sm_unstick monkeyfiend
to unstick other players.
I've set !stuck so it can be used twice per round.
Any bugs, please let me know