MRI

I am an engineer and not a radiologist or a doctor.  But here's my best guess of where my fracture is:

From the side, that spot is exactly where I had pin-point pain.  Also: its where I thought I had peroneal tendonitis.  See statement about about not being a doctor.  From the bottom, in addition to the really cool image of the plantar fascae tendon, there's a very scary and somewhat large line in the back of my heel.   Outside of my foot is actually on the right (this is a mirror image, I think), so the crack lines up with where you see it on the side-view of my foot.  And damn if that's a scary looking long crack.

So yep, definitely broken.