Alabama lost their LB coach Kevin Steele to LSU, and Steele was a big reason as to why Harris went to Alabama, now Harris is reaching out to other schools who were once recruiting him, per Scout.
Narduzzi leaving MSU reportedly affected Larry Scott a lot and now Ohio State may be able to flip him. I don't know if Ohio State is trying to flip Harris as well but maybe Birm can chime in with more info.
If Scott or Harris flips to Ohio State, I think there's a good chance Weber ends up at Michigan, but he may also stick with Ohio State.