Dude I have a similar story. I was doing Kingsfall and because I was the lowest light of the team the fireteam leader and his friend (same clan) blamed me for every wipe. I ignored it for the whole raid so did the team, we actually went trough the raid flawlessly only golgeroth was a bit difficult in terms of how the mechanic worked. After explaining and doing a few test runs. We tried doing it for real. The fireteam leader told me he would kick me if I died (even tho I was a self ress warlock at the time.. Few moments after he died he blamed me and the last gaze before golgeroth was dead he kicked me out. After I was still trying to accept what just happened suddenly the whole team joined me later in orbit, even those two, we decided to kick them. Two hardcore Raiders joined us and we did the raid without dying. [spoiler]even tho they already did it[/spoiler] and that was the first time I completed a raid.