I agree with pretty much everything you wrote from the perspective of the law as well as member of the public with no particular insight into the parties' characters. He is innocent until proven guilty and deserves a vigorous defense. Title IX hearings especially are notorious for being kangaroo courts very much stacked against the accused.
That being said, I meant my comment as a hypothetical from the perspective of the father. I would imagine Robert knows his girl. If she is on the crazy side, it would have behooved him to let it all play out. If he knows she's solid, I don't blame him in the least. Knowing my daughters, if they said it went down the way Ferguson's daughter said, and I could get my hands on him, my reaction would be very similar.
Look at the habitual masturbator! See how thin, pale and haggard he appears; how his eyes are sunken; how long and cadaverous is his cast of countenance; how irritable he is and how sluggish, mentally and physically; how afraid he is to meet the eye of his fellow, feel his damp and chilling hand, so characteristic of great vital exhaustion.” Dr Henry Guernsey, Plain Talks on Avoided Subjects (1882)