The issue was, and please ignore it if i am wrong, was that after the subject (PC) failed both negative energy and fortitude saves, the only indicator that he may have been paralised was the normal gas appearing. He was able to move shortly after the spell was cast and I am unsure if he was able to, while it does not appear to me as if it worked ( No VFX or otherwise, unless the gas signifies this) or that he had been paralyzed or worn off.
I believe it was changed to effectively be a necromancer version of hold person (and thus a mind save is required as well?) so PFA might be blocking it.
All paralysis effects are mind-affecting except Monk's stunning fist and some traps.
Pentaxius has it. This is actually the default implementation for NWN, not an EfU thing.