This map was not designed to play with the bullshit that is in the IBIS ZM server. This includes fasts, poisons, parachutes etc. Parachutes are disabled in this map so mentioning it is useless. However, a fast zombie can strafe through the glitch that was not intended for ANYONE to get through. So really if your going to exploit this map the way certain people have been doing it then either; A. Remove it or B. Do exactly what the people who whine about fasts on escape maps and ban the fast on this map.
The creator of his maps has stated half his maps are not designed for the type of ZM IBIS has. It was designed for classic ZM