His spec is certainly not poor for survival sake, though I can see where he'd have trouble with threat. I find it somewhat odd that he took Abom's Might and not Imp Icy Talons, usually you'll get both from your enhancement shaman.
Judging by his spec, I'm inclined to believe his biggest problem is probably his gear, though player skill may be a factor as well. The only way I would improve his survival from his spec is Mark of Blood, that is without a complete respec. I've tanked with that spec though and it was fine for me, thus my guess that his gear is what is weak.