You should have a throw away pasture for the horses too. Or at the very least a large run area where shelter and food sources are under your direct control.
Exactly...
I haven't seen pictures of his pasture but I think it was mentioned he was using a somewhat temporary fence of electric tape around a clear cut woods area. At the least, a small temporary ring or corral could be made with electric tape inside the present pasture somewhere shady part of the day with a water tub, even if water has to be hauled every day to keep the tub somewhat full. Water is the most important thing for horses.
In short order, the mowed grass inside the ring will be eaten and stomped where food will be under his control. He can then turn the horses onto the green pasture for limited time periods.
Overly runny horse apples and/or mouth slobbers means it's time to adjust the schedule.
The writeup I saw last night about he being member of the month mentioned
his involvement with adopted horses, in some way, for a number of years, so we are probably mentioning things he already knows.
Dave, I realize you are not dead

Somehow I got responding to "riptides"
I would tell you the same thing.