Did you see my later post where I adjusted my opinion?I doubt he could have adjusted the trajectory with brake or throttle given he probably never saw the deer until it was 25 feet away. From the video, looks like he had maybe a tenth of a second to react before the deer actually hit him. Had the bike been traveling at about 35 mph, there would have been a reasonable chance he could have avoided the deer by braking. At 75, no way.
Moving at the same speed, I saw my deer from about 70 feet away. I chose to steer away from it into the oncoming lane because ther was no traffic coming. The deer just trotted out in front of me when I got there. I left a shadow of a tire skid for ten feet before the point of impact. I must have braked hard at the last second. This happened at the very start of the riding season. Had I more seat time, I think I would have chosen to brake hard immediately and that would have probably given the deer time to do whatever it was going to do without me hitting it.
Just my advice, I don't want to spread any bad mojo on anyone...but if you are having a close call once a year or more, I would find somewhere else to ride. After three years living here, I hit a turkey and a deer with my truck. I saw deer on the actual road several times while riding and had one very VERY near miss. The next one was a hit. It wasn't a side strike like the video, it was a front strike. The deer didn't explode like I've seen in other videos. I believe it busted through the top cowl, broke off the cast aluminum instrument cluster/fairing stay bracket and hit me in the chest. I can't say because I likely had been knocked out by that alone before I ever went body surfing down the road. I think I regained consciousness and crawled 12 feet away from the bike fearing it would catch fire. A couple kids woke me up probably five or ten minutes later. No broken bones. Some big deep abrasions on knees and calves.
This area is his home turf and this isn't his first bike, one would think this isn't his first deer encounter but it could very well be...at least he didn't go through what you did...had he gone down it would have been far worse as it appears he was not wearing a jacket and tiny, thin appearing gloves.