Huck did this last year too, may have written about it: I was out in the yard and noticed the Gracie and Lili not acting right. I thought, "where's Huck?". I walked up to the top of the hill and there he was, runnig around our corn patch all upset and lathered up. He was surrounded but the white electrical tape fencing, so he couldn't get out and back to the rest of the herd. Stupid horse, he puts his head down and starts eating the grass on the far side of the fence. The top, electrified wire just slides over his back. He must get shocked and bolt forward or if it grounds out elsewhere he may not get a jolt. Then he finds himself on the wrong side of the fence. I've never actually seen him do this, just pieced it together from the tracks and the bent fencing.
Anyway, he did it again last night. Was head down nibling the grass and pushed his way through. We were at the graduation, and it was late so we left them out last night. We rarely do that, and usually its no problem. We found where he came through the fence and took a right. If he had gone left he would have been free. Instead, he walked into a cul-de-sac, and that is where we found him this morning, hemmed in on three sides.
We'll have to run a second live tape all the way around. In order to do that, I have to cut all the weeds, grass and branches that might short the circuit. Got right on that this morning, burned through two tanks of grass in the weed-eater. When it started to rain I finished the lower pasture and put it down for the day. We should be able to keep them safe down there until we can finish the top side.
Here he is trapped. He won't back his way out. The tape that is in front of him was put up earlier this year when we were letting them graze in the back yard. I just put a halter on him, untied the tape and lead him back to the pasture through the barn.