i'm surprised at that vince, you look no more than 160lbs, so should i throw the baby out with the water? i think not.
i agree that hst is not optimal as is, but thats not to say its science is not sound, the only thing hst lacks in my view is proper periodization, for some reason this aspect has been totally missed. the reason it does not work is the same reasons linear progression only works so long, you lose strength in certain rep ranges and burnout occurs.
as for the protein issue, you dont need to attend nutrition seminars, etc to understand the body cannot manufacture protein from thin air. if you are breaking down a muscle, yet are not increasing protein intake you are not growing overall, as that protein is coming from somewhere. hormones, etc will only allow your body to recycle protein so far before a wall is reached, and net balance is maintained or reduced.