I wouldn't worry. They puff out and beard flare like that when they're trying to loosen skin for a shed so that makes sense. If you aren't seeing lethargic behavior or jet black beard he's probably fine.
It sounds like a normal shedding phase, that is what they do!
You can always upload a video of it, if you get a chance. They have some pretty funny
antics when they are shedding.
Mirage came out of brumation on April 26. He was doing great. On May 2 he started acting funny. We just redid his tank, and he keeps going into one of his hides. He just lays there. He shows no intrest in food. HELP!