I saw the podiatrist again today about my heel/ankle pain.
He still thinks it might be the FHL, but also suggested it could be some kind of neuropathy--e.g. a nerve in my pelvis is actually causing the pain in my foot. However, when he asked me about my pain (if it felt weird, or numb, or was tingling), I said no, it was more like a pinch, and that didn't seem to jive with that partciular theory.
He pushed around on my ankle and the FHL got nice and cranky (but was deep), so we decided to try an injection and see what would happen. He told me to try to relevé later and see if it helped the pain at all (since the injection basically numbs it for a few hours afterward). Alas, I'm still numb (though its wearing off), and still getting a pinch. That being said, I have been on my feet the last few hours, so I imagine I'm still nice and inflamed down there.
If it does start to feel better, I can ease back into class. If not, I need to take Advil and see him again (I'll see him in 2 weeks for a checkup anyway).
Let's hope we can figure this out soon!