wow! I'm surprised he had the strength to swim 3 miles. When I boarded at a racing stables, there was an equine pool and Most horses really had to work up to swimming for more than a minute or two.
I also kind of wonder why he would choose swimming over land - if he did spook I agree that anything could happen and he could resort to anything to get away, but isn't water usually seen as a 'danger zone' for horses?
Either way, I'm glad there was a good ending to this all.
" If the entire world was one big machine, I couldn't be an extra part. I had to be here for some reason." ~ Hugo Cabret