In the end you're probably right. He's such a generally limited player that its hard to tell, But if you've ever had -- or read the accounts of athletes that have had -- plantar fascitis (Antonio Gates comes to mind), there are some days you barely feel it and others where its like there's broken glass in your shoes.
Clearly I don't know, but the dude looked hobbled in the last game, we were talking about it and then he is sitting on the bench with his face in a bag of ice.
Last night, right from the jump he was moving around really well. It was a stark difference.