My take is the same.
The guy in question had mediocre stamina before he got injured and he played quite a lot and did well.
Now, he was pushed into a backup role mostly and now averages 4 fouls per game (6 fouls in 20 minutes in 1 game and 4 in 26 in the other).
So stamina surely affects how much a player fouls.
The same with average ratings (before the injury they were around 7,5, peak at 9 and now its 5,5 or 6).