Indeed you have it right. In fact the PA did go through a whole set of range of motion and "does it hurt" tests which all indicated no fracture. The tuning fork was just a last check to verify that, and of course I had the option to go get an X-ray if I wanted it regardless.

I just didn't see any need at that point, since the treatment would just end up being "take it easy on your hand and don't engage in any sports for a while."