cowboydoc - I've had days like that too! Our horses have only gotten out once and as you did with your cattle, it was time to delegate. I sent my daughter to get some feed to entice them back into the pasture while I positioned myself between the horses and the road. Fortunately, two of them went back in almost immediately but the other one (the Appaloosa gelding) decided he wanted to explore. He never made it to the road, the grain was too tempting, but it made for some very anxious moments.
One of our neighbors had their horses get out late one night. They had bought a new horse, and they had no way of separating the new one from the other two they owned. (We always separate the new one so they can say their initial 'hellos' across a fence. Then we move one of our existing horses into the pasture with the new one. This doesn't eliminate the squealing and kicking once they are together, but it hasn't been as bad in our experience.) Well, their other two horses cornered it. It broke through the fence, ended up on a nearby road (55 mph speed limit) and was hit. I didn't hear of this until I saw the spot on the road where it happened. There were no remains left, but I knew something big had been hit.
RichZ - Our palomino had the same problem and we had to put her hay on the ground until the infection cleared up. But it only happened one time and just with the palomino, so we've stuck with the racks to keep the hay off the ground.