I used to cum hands free in my youth, though I never had the patience to do it from soft to cumming like pajoe. I'd always get hard stroking my dick and looking at porn first and then take it the rest of the way by working my sphincter, pelvic floor muscles and mind. I agree that it makes for an incredibly intense orgasm and during that orgasm I would always feel that my cock was totally in control of me, instead of the other way around.
Alas, I haven't been able to do that in years. But I can still come close to the same orgasmic sensation by bringing my self to the edge and then just pressing the base of my cock against something firm while vigorously exercising my body's most powerful sex organ, the mind. Not dry humping the inanimate object just steady pressure, as in the two attached pics. It gives me that same feeling that my cock is in control of the rest of me during the orgasm.