I was there that match, though I was in a different party.

I caught that same individual AFKing hiding on a ledge the very next match. I called them out in part chat, "hey, xxx xxx are you going to AFK hiding on that ledge the whole match?" They responded, "depends." We kicked him/her again. Then, about an hour later I saw the same person doing it again, only this time they were doing it with the same person who caused a stink in alliance chat the first time.