Maybe I was perceiving actual dump time wrong (need a stopwatch)? Maybe I thought only 3 minutes was 10-15? Maybe I was my using the fuselage tank valve handle accidentally and not the wing/tail?

Based upon your known history of RAS multiple personality disorder its highly likely that you opened your dump valve then experienced what appeared to be a 15 minute time lapse during your Wilbur phase. When Sean regained control of your mind it had really only been 3 minutes. Be careful over there Sean (Wilbur). Such mental lapses could get someone killed during ATs with 40+ gliders playing chicken that you have so often demanded.

I'm glad I could help clear things up for Sean (Wilbur) and issue this friendly safety warning to the rest of the WGC field.