Just coming off the same situation myself Scotty.  Had elbow surgery (rt arm) at the end of last year to remove bone spurs in my elbow and trained for two months w/only the left arm.  I think it improved my game a lot -- got me thinking more about foot and hip placement, weight distrib, etc.  Not fully recovered so I'm still pretty vulnerable to guys attacking my rt arm, but overall that two months really helped me I think.
I remember getting spanked by JD when he was hurt too...not fun!
(Judo) Tom

Remember in the early days of Mountain View, when JD Penn injured his shoulder, he would simply tie that arm up with the belt.  After awhile we were all doing that!
 
A few years later I broke my hand and had it in a cast, Ralph made me train anyways!  People kept grabbing the cast (which to make things worse had one finger suspended)...lol I had a big list of payback by the time I was healed up.
 
You can always check out Carlson's black belt Aaron Lapointe.
 
Nowadays both arms are healthy, but I have a student I always have to work with because he only has one effective arm (and leg for that matter due to a stroke).