I wonder how they could implement in a way that made sense a ranged interrupt/silence for a "Bear"
But you're right in that this is a hole:
Paladin: Avenger's Shield
Warrior: Heroic Throw (with prot Gag Order talent)
DK: Death Grip
How about
:
Ground and Pound
30 yd range
Instant 1 min cooldown
Requires Bear Form
You pound the ground, throwing dirt at the enemy, causing 12 damage (based on attack power). This ability causes high threat.
Then add to "Brutal Impact" talent (rank 1):
... Gives your Ground and Pound a 50% chance to silence the target for 3 sec. Also, lowers the cooldown on Ground and Pound by 15 sec.