I emailed Hoyt Hawkins and he answered back. With his permission, here's what he told me.
To make a long story short, I fell in April 2012, and it resulted in a broken back in two places. Surgery was not successful, and my rehab was further complicated by the Parkinson's disease diagnosed in 1973 while I was on active duty in the USAF.
I stopped flying any type of airplane in 2006, but did play golf everyday until my fall. I am wheelchair bound and can walk with the aid of a walker for short distances with my wife walking behind me in case I fall...which is nearly always backwards.
Sincerely,
Hawk