While your scenario is possible, i think it is more likely that he will be able to be back to previous form (or close to it)....but just not this upcoming year.
Bone growth around the temporary stabilizing implants was being inhibited by the inflammation caused by infection. It can be VERY difficult to eliminate an infection in the presence of such a foreign body, but if this can be achieved, I would expect a young, strong, well-muscled patient like Jagusah to still be able to heal well (I do admit that the specifics of his fracture are unclear, but I wouldn't expect ND medical personnel to express such optimism if it were not a type of fracture that would be expected to heal well if not inhibited). Also, there was no mention of resistant organisms.
I don't see Jagusah being able to regain his muscle mass and strength fast enough to be able to surpass present players on the 2 deep this upcoming year....he probably wouldn't be able to begin that process even after success until the Fall. But he is a true senior this year who has not burned even one year of eligibilty. That means that he has a minimum of 2026 and 2027 seasons to play, and he would be a shoe in for a 6th yr of eligibility if he chose to fill out the paper work for 2028.