ApGirl, and your DH, too!
Wow, 20 lbs lost on Phase 1!
Whether it's water weight or not, 20 lbs is 20 lbs,
gone!
As for your DH gaining, I'm not really sure why. It could be his body just readjusting itself to his new way-of-eating.
I can certainly understand how fustrating it must be to him
, and I commend him to sticking with it. Just think of the good things he is doing to his body now with the changes in his lifestyle. I'll bet that he will eventually see a big loss all the sudden, once his body adjusts itself.