So it's good news:

Carolina Panthers DT Star Lotulelei leaves with ankle injury | CharlotteObserver.com

X-rays on the ankle were negative, and Panthers coach Ron Rivera said nothing was broken. Lotulelei will be further evaluated in Charlotte.

You can bet though it is a bad sprain and he will miss at least a couple games if not more. I will qualify that statement by saying I am not a doctor and have zero credentials in the medical field. The replay gave a pretty clear view of the injury. Star stepped on Kuechly foot and rolled his right ankle over about 90 degrees but then was able to pull up. You can watch the video here (not for the squeamish). It's a common basketball injury actually.

Basketball type severe inversion (low) ankle sprain stepping on a teammate foot for STAR LOTULELEI @Panthers. Hope x-rays negative. — David J. Chao, MD (@ProFootballDoc) November 11, 2014

So I send out good vibes to Star and hope for his speedy recovery. If he secretly hopes he sits the rest of 2014 out I would understand.