Looks like you dodged a bullet there. But I may not be a forgiving as the other comments. First, you were in an AOW class. To me, as an instructor, you have successfully completed OW training and at this point a responsible diver. Class or no class, as a certified diver you should have aborted the dive regardless of the instructor. If I was leading this class and you told me you ascended by yourself because on how you felt, I would have congratulated you for doing what is right. As far a being a "solo diver", certifying agencies don't certify solo divers to only a limited depth. Being a solo diver requires experience and training. We all have dived with instabuddies. Being a buddy means both divers are looking out for each other. You said your buddy was no where to be found. Both members of the buddy team have the same responsibility to stay close to the other. I'm sure many others experienced divers on this thread had to chase buddies and scold them underwater. An AOW specialty certificate means that for that situation in which you are seeking certification, you handle not only the routine, but the unexpected. I did an AOW deep diving certification dive recently where the dive plan went completely wrong. However the students responded appropriately and passed the class. If the pilot of the plane comes on the speaker and says," Something does'doesn't feel right in the cockpit, but let's go anyway", how would you feel? It's not important to blame it on dark narc, CO2, or any other rapture of the deep. Any diver, can call, any dive, for any reason, no questions asked!! The only other comment is that some of your posted seemed a bit histrionic. Self awareness and situational awareness are the mainstay to self preservation as a diver.