Cyclone bug?

so me and some friends was running maps, and started to chrash whoole game chrashed. thought first it was a common error but no, had 1 guy in party doing cyclone. first with and microtrans on it. he put it off and we didnt stop chrashing.
after some hours and some maps later, my friend the cyclone "man" logged of and we stopped chrashing. After that he stopped using cyclone (we didnt let him do use it) and since then we havent chrashed one single time.
We dont get disconnected whole game chrashes, pathofexile.exe doesnt respond or something like that.