Something similiar happend to me today:
Was running reg OK and our lolbloodelf dk tank was acting like idiot half way through whenever we get half way to Jedoga during the elemental trash mobs,the casters he starts jumping up and down so we are like okay...So we were guessing he wanted us to pull the mobs towards him so after the second mob?And then he gets mad and then hearths then this happens:
Don't think he was trying to ninja..he was messing around,he even whispered the raid leader..You can still trade loot to people right for about 2 hours?Or is that instances only?