Frost DK could:

Glyph Pillar of Frost.
And use:
#show
/cast Pillar of Frost
/cancelaura Pillar of Frost
That's a one minute trinket.

Then they have their regular two minute pvp trinket.

And can use the 90 talent to be immune to CC for 10 seconds, every 2 minutes (but on an 8 yard radius area, at the time of the use).
Desecrated Ground even removes loss of control effects.

So that is four uses (PoF x2) of Loss_Of_Control break every 2 minutes.



If AoE CC is that bad, Frost DK's become a strong option.