I think your prof has spent too much time in the classroom and not enough time in practice. I have seen people recover from BPD through lots of hard work. It happens a lot more than we hear because those who are doing well quit therapy, quit posting, etc.

I think the same thing is possible for Dependant PD. I'd envision CBT/DBT might help...but I have no experience with this.

I think your prof needs to refresh his skills in the field. Tho, you might not wanna suggest that until AFTER grades are posted!

em