I can and have gotten away with eating that amount too as long as I bumped my carbs and fat up. I actually eat noticeably less protein when I'm trying to add muscle than when I'm dieting down. I've always felt fat and especially carbs are more important overall to adding muscle than simply consuming more protein.
you should drop protein when trying to add muscle, liquid c. from what alex says you look pretty big, you should start incorporating yoru "dieting" amount of protein into your offseason caloric intake and i will bet you start growing much faster.
you might just have enlarged waist and feel fat, simply becausee you have a bunch of meant in your intestines thats slowly beign digested, adding bulk to your midesction and weighin you down.
protein intake surely does not make one fat.