Count me as another IT professional. I've been a UNIX Systems Administrator for more than half my life. When I'm not giving my employer more work than I'm actually paid for, I play amateur hockey.
I cannot speak for others of my gender but, for me, whether I go flaccid after an orgasm is a matter of how horny I still am. Sometimes one orgasm in a session is enough, but usually three or four is what I really want.
I know I'm going to regret saying this... but yes. I can bring myself to full tumescence using just thought. Conversely, I can use directed relaxation techniques to dissipate an erection. Dissipation is far more difficult and requires a lot more concentration. If I cannot get some help from my subject, or if it is inappropriate to get help, I definitely prefer to relieve the tension by manipulation rather than relaxation.
I've had multiple orgasms in a single session. They would be more common if I didn't have to contend with donning another raincoat in order to continue.
Maybe it's time to get my tubes chopped or strangled or whatever it is that they do for men.
I attended catholic school for many years as a child; I have to say: those "nun" uniforms don't have the effect on me that they seem to have on some people in this forum. I'm quite happy that there haven't been very many of them.
I am naked because Mars intends to align with Venus.