You could try having somebody drop you off. By that, I mean have somebody come in with you when you bait the stand as you normally would, same time of day, etc. and while your buddy is baiting, you hop in your stand as quietly as possible and then your buddy leaves. Ideally the bear will think you baited and left the area as usual - it might be enough to trick the bear in to thinking you baited the spot and left. This trick has usually worked fairly well for us here in Wisconsin.
Also, try and get as far away from the bait as you can comfortably shoot at a bear at the bait. Cover looks pretty thick so I'm guessing you can't back off too far, but every little bit helps. Sometimes, you can catch them scent checking the bait before they come in and shoot them well before they get the chance to eat. Like fackelberry, we've had luck just sitting in a sparse brush/grass blind on the ground when the presence of a double bull/ameristep seemed to spook them a bit.
Good luck, looks like a great bear. Let us know the weight when you get him if you can.
