My uncle taught there at the time. He suffered a minor wound, but it was the deciding (but not the only) factor in his resignation. He continued to teach, but not at university level after that.
He has never been angry at the shooter, only incredibly sad at the loss of life and innocence that day. The loss of innocence is something he talks about. He’s in his 80’s now and sometimes he’ll talk about the experience, but he is not particularly focused on it.
Didn’t the autopsy conclude Whitman had an undiagnosed brain tumor? It’s been a while since I’ve read anything about the incident.