Currently running mix of feral/rogue/rshaman or feral/warrior/rshaman.

Our shaman has a huge problem with dieing to DKs and/or Warriors. I understand we need to assist him and peel - and we do. Disarms, stuns, cyclones, roots, etc. Despite all those efforts he sometimes dies in like 8-10 seconds of a DK training him because when he pops various CDs you literally cannot stop him for a certain window of time (AMS and Icebound Fortitude make it tough for our comp to CC). So here's my question: is this a general problem and trend for resto shamans? Should he die just because "he got silenced"? What do you guys do to combat the long silence/stun the DK puts out?