I would think a better solution would be to stop all use of chemicals and run goats using no hormones or dewormers. If the size warrants it, run cows with calves. The calves don't eat the grass but they run around and play which is exactly what the soil needs. Cross fence the animals in tight and move them from pasture to pasture every couple of days. Keep enough pastures so that the animals don't have to return to the first pasture until the plants/grass have grown up tall.
Get the soil tested at
The Texas Plant and Soil Lab and feed the livestock whatever minerals the soil needs. Other than that, don't treat the soil with anything and let the new inrush of insects and animal dung take care of it. Hopefully he'll get some dung beetles that will do a better job of aerating than his renovator tool.