Recent content by LevelUPMC

I have checked the admin log, and I see no indication of anyone's account being deleted. Also I may have mislead you guys with this, but what I mean is I set permissions so only admins can post in new and update, but this guy is able to post in there.

So I have had this problem for sometime but haven't been able to fix it. This user was able to post in admin only sections, but when I look in the admin panel, I can't seem to find the user. Is there any reason why this is happening?