Dude, first off, thanks for sharing! :D

As far as your problem goes, I wouldn't talk to them if I were you. Bringing up the issue will just create more awkwardness. Just pretend as if nothing happened. They will get over it pretty soon.

Yeah, for future activities :D, you might wanna consider the more sensual side of sex and ask your wifey to give the "I'mma bad girl, spank me!" attitude a little rest. Hey, you might end up enjoying slow, sensual, erotic sex just as much. Good luck, bud!