You ignore them and kill them last. A tank sham that has been CC’ed and focused last isn’t doing anything to spin the flag. Or are you one of those AB players that still thinks taking on 1v1’s in the AB is going to win you the game? The 700dmg flame shock and 120white hit autos in a game that has 10k+hp isn’t doing much. Hitting them and giving free MSW chain lightning proc+aoe lightning shield damage is.
Heck, even if it is a 1v1. Polymorph, trinket, polymorph, cap it.
Sap, trinket, vanish, sap cap it.