Bunch all characters up against the paladin, keep consecration down at all times. If a mage/priest gets frozen, consecration will break them out quick. If the paladin is frozen? Either racial or just have the mages do an AOE. When the adds spawn it doesn't matter who they go for, consecration will lead them right to the paladin :P (again, provided all characters are standing right near each other)

Pretty much what Rin said.