Killbind for zombies?

I played a game of Virus last night and we spent quite a few rounds on custom maps, and on one in particular, Detroit, there was a nasty bug where zombies would sometimes get stuck in the floor on spawn and have no way to get out. I remember also encountering this bug on Catzec a few months ago, it was patched in one of the updates, but I’m just noting the possibility of this occuring on official maps.
So, how does the idea of adding killbinds for zombies sound?
Only downside I can see is that some players may abuse it to get better spawns closer to survivors. To mitigate this I propose making killbind available for zombies ~10-15 seconds after spawning.