We could also put up ads on freecycle and freeshare with the heading-
Wanted:Help in finding stolen horse.
I don't think the admins in TX and Ok would have an issue with it and the people (at least in my area) would help. They place ads for finding lost dogs occasionally.
They are delivering the writ of assistance to the men responsible for the disappearance. They will have 24 hours to bring Max to the "meeting place". If not brought in 24 hours, they will be facing criminal charges.
That's all I know right now but after the lunch hour is over, I will call and make sure the writ was handed out.