JC, you will most likely lose a good bit of that extra gained bodyfat without changing anything, since the fat gained was mearly from inactivity. As soon as your training resumes you'll see that yourself. There are dozens of threads on the site devoted to fat loss inluding one I posted on earlier today tittled "abs". Take some time, search and read them. If you've decided to "buckle" down on the diet then you'll have no problem getting ripped.

On the traps part:

direct trap work:

Shrugs (barbell and dumbell)
Upright row (elbows up high)
Dead lifts (power lifting style)
Power cleans

Indirect trap work:

military press
lateral raises

Do them all! Just remember to cycle the heavy joint stress exercises so you don't overdue it. Work them no more than 2x per week to avoid overtraining. (1x may be enough)

Good luck and pm me if you have any questions you can't get answered.