Ok, so its apparent that Bethesda are notorious for glitchy and buggy games in general which we forgive time and time again, now with the release of Dawnguard, these minor, sometimes entertaining bugs are more common, more tedious, and some even make the game un-playable or can stop us from progressing.

My issue exactly, I just saved the moth priest from his vampire captors at Forebears Holdout, told him where to go, Fort Dawnguard, and now, whenever I enter the fort, after numerous reloads and days away from the fort, he insists on attacking my fellow dawnguard members!?! ... Not only this, but after he loses, obviously, he will stay on one knee until I exit the room, and once again upon returning, he'll start another fight .. I even tried using healing hands on the ungrateful monk, only to have him, once again, attack myself and the dawnguard >=|...

Please somebody post your solutions tips and tricks as I've googled this and found it a common problem but with no real solutions other than reload before the cave (which I cannot do because I dont have a save that far back so please nobody suggest that thank you )