Thanks everyone! This actually makes me feel a lot better!
Technically, I was cut off the class early and didn't splash for the last dive on the last day. The class was 5 days and on day 1 we were told we have two more dives than normal. My near panic moment described above was dive 1 on day 4. After we surfaced, instructor and other student went back down to finish some skills. Then somehow I finished the entire second dive on day 4, we did another valve drill, s-drills and I did my first smb deployment ever - which was a super cool feeling
Oh, I forgot to mention that on day 1 the instructor told us verbatim that no one will "fail" the class. So after day 4 ended the realization that I'm about to fail a class that "no one fails" hit me pretty head on. After not sleeping at all that night (also, had to deal with mice in the hotel, not making excuses, but it did affect me) waking up for day 5 was tough. I didn't want to be in the water at all. I did a pretty poor valve drill, I almost took the backup out of my mouth with my right hand with my primary still clipped. Pretty bad stuff, my teammate signaled and was like wtf are you doing
. I finished the valve drill but I felt that was about to lose it again. So during the next skill which was helicopter turn practice (my left turn was worse than my right so I imagine instructor wanted to sneak one more full isolated practice) I decided to call it before it got to a really bad state again. Teammate deployed an smb, we surfaced and I was told I failed and won't be diving anymore. At this point, I was glad to be out of the water and there was no way I was diving again that day.
So having two extra dives, I skipped one full and two half dives so I imagine I got close to the full experience so I don't feel too bad about not technically completing the class. I didn't do the no mask swim but this sounds like an easy skill compared to others. It's a swim, so trim, balance and stability is a lot easier.
Oh, also a really cool tidbit. Instructor told me he knew all the way during my valve drill that I was about to lose it again. He could see my diaphragm twitching so he knew my breathing was fast, shallow and bad. The situational awareness of GUE instructors is out of this world - they can see your internal organs moving.