I got a tip that Kaleb Ringer had gotten the boot from his high school team for disciplinary reasons, and this appears to be true. He's had a recurring issue that was finally too much and he's gotten axed. I don't know if this will change his status as a Michigan commit, but if he decommits at some point in the near future that would be why.
[UPDATE:BISB: Sam Webb just tweeted that Kaleb was not booted. Just sitting with a sprained knee. The plot thickens.]