Holy hog! That's gonna be a LOT of lard as well as meat! Might be time to buy another freezer, or maybe make that "block party" you were talking about substantially larger!
Look at the shoulders on that boy! Think of the BBQ you could have with one of those! Oh my! Those pork chops are gonna be the size of a large rib eye steak or a T bone!
I have them leave the fat on the roasts and pork chops. When I fry pork chops, I use only enough oil to get them started, the rest of the fat cooks out of the pork chops. I always have more fat in the skillet than what I started with.
We had a duroc boar that we used, belonged to a friend. After the third time we used him, they said to take him to the stockyards as he was getting too big. George was 905lbs. when he went across the scales and both my son and I nearly cried because a better dispositioned boar you would never find. The check was for little or nothing cuz at the time boars were bringing like $.10 or $.20 lb.
Dally around an upright on the trailer. One wrap will do it and keep pressure on him. They'll eventually get tired, make a step forward and you just keep taking up the slack. I helped load lots of big ones just that way out of the National Forest back when this was still free range. After a bit of pressure and maybe someone switching their rear ends with a little sweetgum limb, they'll be more than happy to get in the trailer. If we'd had to wait for them to climb in for a few treats we'd been waiting 9 years to get 'em all loaded up.
Of course, you have horses, so you should know what to dally to. Pass the lariat thru the bars on the trailer side and suck that stinker up in the trailer with your pony.