Happened to me just now. I joined a game, and randomly during BMZ, I got Server Admin. Aside from that, things were normal. All I did was setrings and setlives because people wanted me to, forceskin Tails for the lulz, and then after I finished the level, messed around with forceskin to kill the three people that weren't yet finished. Aside from getting server admin, nothing else happened to me involuntarily.
Also, it's REALLY fun to forceskin Sonic when someone is trying to fly as Tails. They go Super XD