Templars have just as many, if not more options then other classes when they can't auto attack. You can still use whatever heals you spec into, a barrier skill, your debuff, res people, a root spell, mareas hammer for damage/stun, white curse for aoe stun, and if your really that worried about constantly being vacuumed nothing is stopping you from using holy light/destruction...oh yeah, and shield strike. Stop acting like ShadowAce and ignoring the other 1xx skill points you've spent on things other then blunt mastery.
Plus there is the whole concept that due to reflect templars are the only dps class with any resistance to vacuum. People cry when their reflect drops, they get vacuumed, and most of their dps gets shut down for a bit...but templars are lucky enough to get 30-60 seconds at the start of the fight to do something where as most other classes can get shut down for by vacuum right at the start of a fight.
And again, its just another example at how blunt mastery has totally ****ed this game up. Why do people talk like vacuum is for some reason a counter to templars even though it hurts a lot of other builds just as much? Simple...if you waste a vacuum cooldown on one of those other toons your a moron. Its the same with trying to say obli is a templar counter. These things weren't put in the game to counter templars...they were meant to mitigate damage from a lot of classes...its just templars are so OP nobody wastes their cooldowns on any of the little nub classes when a templar is around.