Hi,
It is hard to say what would have happened. It is best to take that up with the Dr themselves.
There are Ottawa ankle rules to follow - did he do those?
Asking your opinion is a good thing for a Dr to do because quite often the patient actually knows what is going on and Dr's are hopefully being trained to listen to the patient more carefully.
As for not wrapping, that is what i would consider bad advice...Rest Ice Compression and Elevation - you don't wrap/compress while elevating to aid swelling reduction.
If you could walk out of there, it wasn't too bad? The Ottawa Ankle Rules are a good place to check - i think you would have had a tender fibula if you had a Weber B...
Good luck -