The same thing happened last year, and now that I'm building volume it's started again. Whenever I do a long-ish swim (as in more than one mile without stopping) almost as soon as I stop, my lats start to cramp. If I try to reach up to take off my swim cap/goggles, they completely freak out and go into all kinds of spasms. They spasm for the next couple hours and then I'm fine, no lasting soreness or anything.
I drink a gallon + of water during the on season, and I never have any problems with cramping in the other sports. I also do plenty of strength training. I feel fine during the swim, it's not till when I stop that I have the problem. It's just really uncomfortable. Has this happened to anyone else, and does anyone have any advice on anything I can try so that I won't have this happen?