It looks as though there may have been an issue with the front hub / rim assembly.
The guy riding next to him watched it happen.
He said the front tire start to wobble real bad.
However, the bars where not wobbling.
Within an instant the bike endo'd over and burst into flames.
We still do not know the root cause... The front wheel was not recovered and it is making it harder to understand what went wrong.
I just got back from the hospital... he looks rough.
He'll live, but it will take some time for his wounds to heal.
Road Rash sucks... note to self: don't be cheap on gear.