Reiningchic11, he is just Beautiful!! You have a great eye to see that beauty beneath the neglect.
I ALWAYS give my horses a trace mineral salt block. 50 pounds is only $2 more than straight salt. I keep mine in my shelter's manger, so the rain won't wash it away. I realize that your gelding's malnourishment may have been caused by more than this, but I encourage everyone to supply this, just in case.
Congratulations and good work!