Wow, so much emotion! You've been given some great advice on this thread and I'll add my 2 cents' worth.
Yes it is true that thyroid cancer is one of the "best" to get. True, it is cancer, and it sucks. But it really becomes like a chronic medical condition, perhaps even like diabetes. Once we get regulated on meds, life is stable. Yes, some thyroid cancers recur and are stubborn and even others spread. Odds are in your husband's favor! Even for those that recur and or spread, it remains treatable with RAI.
I had breast cancer in 1999 (am 39 now) and had papillary carcinoma in June of this year. Let me tell ya, physically and mentally, thyroid cancer wins hands down!
Worrying won't change the outcome, so try not to. Instead, put your energy into learning, researching and taking control (sounds like you are doing that already!).
Getting an experienced surgeon is key...some complications can occur, but mostly it is a pretty easy process. My surgery was 4 months ago and my scar fades more each day. I had no complications, no problems with my vocal cords, etc. Minimal time off work.
And hang in there! If, and that is a BIG IF, it is cancer, this is very do-able!
Lori