I'm not a Sheldon fan per se, but I don't have anything against them either. Therefore, I have no dog in this fight, but I do have a comment... If Sheldon had ineligible players in uniform, even if they didn't play, they may end up having to forfeit games.
For example: Chino Hills. during Lonzo's junior year, spotted the problem after they had done this and voluntarily forfeited 11 games after they found they had inadvertently suited up an ineligible player for those games. The good news for Chino Hills was they discovered their error in January, made the forfeits, and were able to play the rest of the season without penalty, and still qualify for playoffs (I think they only forfeited one or two league games).
Hopefully, Sheldon discovered this eligibility problem (hopefully an oversight, but who knows?) and took care of it quickly without having suited up ineligible guys in games... If they did so, the CIF and/or the SJS might have to come down on Sheldon again (probably whether or not it was just an honest mistake might not even matter). And they'd probably come down on 'em even harder than last time.
Once again, I do not wish bad things on Sheldon, but wake up, administrators...