I "shamefully" admit I "exploited" a fat man body type on my team once in Novare. I stood right behind him and capped, the other team though he was capping and they were hitting him with single target attacks, not a single one of them AoE'ed
I guess they couldn't get an angle to see me because he was a little bit inside the entrance to the box
OP, pulls and knockbacks work wonders in that situation, I've done that a few times to break the cycle. Even with the new facing rules for knockbacks it should work.