This is Seve's Pushover, a coming two year old Tennessee Walking Horse.  He apparently tried to jump the fence to get in the adjoining pasture with a Tennessee Walking Horse mare, Jamaica Mistake, and her pasture mate, an American Saddlebred mare, Missouri Showtime. Fortunately, SP is tall enough that all four feet touched the ground so that his weight was mostly off the gate.   And he remained calm enough for us to pour Wesson oil over the gate & underneath him so that we could open the gate and slide him off.  All's well that ends well.