Yes, she is "very tenured" and has been a full Professor for some 35 years at the University of Oregon. She's right at the apex of the law school.
 As far as blackface and other racial stereotyping I hope now, with this incident, most people will understand it's not "funny" and is likely to upset other people even if not intended.  With the racial tensions at the university this year common sense would suggest you avoid it except in very special circumstances..

However, dressed as a "commando" I don't think anyone would accuse you of wearing  racist "blackface" as you were impersonating a standard military technique rather than an actual African-American.
This is in contrast to our Professor who, in her lawyerish apology admitted only to wearing "black makeup", not the socially explosive "blackface" others saw.