If you play socom 3 or work for sony answer this plz What is Mediouslobby01 1?

me nd a couple of buds made a room on socom 3 and combined ault well we made it in eseals but wen evry1 waz in the room it said Mediuslobby01 1 and the room had a pw on it and after prolly 5 games we were messin around in harvester and then the hummer in harvester small kicked us out of it and started driving by itself then it stopped driving and we saw a floating head wtf!!!!!!