You are not a fail.

[SpookyGhost]

WHM not popping Cleric Stance and fast-clutching into Holy with Swiftcast is simply a waste.

You can get what, 8? Seconds where the tank isn't being hit, and shave off 1/3rd of the mobs health.

I agree, but as a rather important aside, some mobs are immune to stun. Don't leave your tank with no HoTs while you're Holy spamming if this is the case. Please. :V