I think you and I are in agreement on Schill's "rush to judgment" regarding Ms Shurtz.  You can be both innocent and use bad judgment...or, if you will, no use good judgment.  Ms shurtz, IMO, has the best of intentions but failed to realize that, especially in today's social/political climate, others would see her protrayal as "mocking."  Clearly it wasn't so intended.  

However, realize that Schill is a "big time" bureaucrat and, as such, likely feels an apology is beneath him.  IMO, his actions toward Ms. shurtz were far more offensive than her portrayal of Dr. Tweedy at her holloween party.  Self-righteous indignation doesn't always play well.  Gary Crum