In the future, feed pinkies instead of fuzzies. I've seen snakes like pythons get impacted on the fur from fuzzies, and they were designed to eat rodents as a primary food. A pacman CAN eat fuzzies, but pinkies are safer and easier to digest.
If you've had him since last August, and this is the first issue you've had with him not eating, he may be impacted. Don't try to feed mice at all for awhile; stick to crickets and nightcrawlers. Also, if it won't freak him out too much, you can try to gently feel his right side. If he is impacted, there will probably be a lump there.

As for the crazy feeding response, some of them just don't do that. I bought mine thinking it would be an 'easy' frog to keep because I wouldn't have to worry about it refusing food often. She's never had the crazy 'lunge at anything that moves' feeding response you see in youtube videos. Pacmans (most frogs for that matter) are never going to enjoy being handled. The most you can hope for is for them to trust you enough that they don't mind necessary handling, or having you hang out near their tank and watch them.