I just finished the episode and it was a blast to watch. I really liked how they kept Ayane-sensei's delusions and illogical statements in tact, and the scene with Rise and her in the bath..."nosebleeds".
The animation was a bit lacking, but it kept true to the first 4 chapters and the chapter 19th special of the series. My verdict for this OAV: Boner approved!
I hope they make more considering that many sites have marked this series has completed already and we haven't had a chance to see the student council president and her secretary yet.