I had the same surgery Howard did, and I know I am not a pro athlete, but once the back is so bad you have to have surgery, it is tremendously difficult to get it back to where it was pre-surgery and keep it that way. Howard is a freak of nature, but with the stress he is going to be putting on that back from jumping, landing, lifting weights and running, a full 100% recovery with no lingering problems is not a given thing.
I had my surgery 10 years ago and have since herniated the same disc again and another.