I read somewhere that he broke his fibula, which isn't a big deal so long as it's not displaced and can be wrapped tightly during the race. I'd bet he'll be at Budd's, o/w how could he rationalize racing the 2nd Southwick race?
By the way, he was interviewed not long ago on DMXS and talked about how when he's injured, he keeps all info. private--primarily to psych out his competition, and he practices alone. I'd bet no one hears whether he'll race until the KTM truck shows up in the pits.