Short and sweet description..
Had been playing on Mesa II for a while, and as SBH for at least the last 5-10 mins.
Died, respawned, chose SBH again...and.....
suddenly I'm in floaty cam . Still had the "Press E to access purchase terminal" message on screen (and it never went away). WSAD keys controlling movement of cam (W down, S, UP, A/D = left/right)
No other keys seemed to have any effect. I could "change team" from the menu, but it didn't show any change in view, I could only tell by the change in message text colour. Suicide appeared to do nothing.
Ended up having to quit game.