Difficult Choices

So patch 3.2 hit last night, and I'm feeling the aftermath. CoDS went into the new 10-man crusader raid last night and got chewed up and spit out. We wiped a few times on the very first mini-boss before figuring out that we needed to switch tanks once the main tank got the bleed effect. Also the 15-yard radius around the boss in which spell casters shouldn't stand. We finally downed him but with only 3 left alive out of our 10, and the jormungers (or however it's spelled) ate us rather quickly. I'll chalk it up as a lesson learned: we are way undergeared for that content right now, even the first few mini-bosses. I am glad we got to see a fight first-hand without already knowing the fight, and able to analyze it and down it.
So in the aftermath of the patch I started updating all my addons and updated my rawr with the new gear today, and while I was playing with rawr noticed that my spec is no longer ahead of the Frostfire nor the Fire spec in damage. So that leaves me with a difficult choice now. Do I switch specs to the more popular frostfire spec and fire spec as my main and off spec, or do I keep my good old frost spec as a back and just jump into the fire spec, or do I keep arcane as my secondary spec. I'm a bit conflicted as I have really grown to like my arcane, and I have gotten quite good at it, but I'll be starting all over again if I go with either of these new specs, and I'll now be looking for spell crit gear vs spell haste gear, which means no going back once the change has been made. I guess I have been fighting the inevitable, since Blizzard has piled on the spell crit with the Tier 8 gear, so why fight it? I'll probably swap out my frost spec first so that I can keep my arcane spec available in case I have trouble with the learning curve of a new spec. After I'm comfortable then maybe I'll drop my arcane spec as well.