I know very little about this stuff as well, so I wouldn't be the one to answer! Williams out of Texas didn't have a fluke knee deal, it must be somebody else you're thinking of. The good news though is that Stanton will have plenty of time to work through his recovery before he even assumes 'redshirt freshman' status at Nebraska. I guess knee injuries can cover a wide range of seriousness. PaulC may know more here and he certainly wasn't stoked when he heard that the MCL was also torn.
In the upcoming spring, though, we'll have Taylor and Tommy.