you sure about that?, no j/k. hehe It's probably lithtech messing around, i had no problems with survival, but plenty other compaigns in the past, fear3 being the last i remember, slomo effect broken. i usually restart and it works after a few tries if im lucky.
Sorry cant help you there, this tech is way outdated, it does whatever it wants. heh
Use cheat mp_sixthsense for a sec to get you up and continue, no biggy, i wont tell anyone ...