Years ago I worked at the same place where a very prominent mormon did, and weirdly enough he was the one who WASN'T attempting any conversions. However,
some guy no one had met before decided to send all of us, the mormon's coworkers who were in "danger", copies of some fucked-up anti-mormon book and VHS tape.
I watched it, it was mainly a cartoon about how ridiculous Mormonism is. Matter of fact, he's got a whole series on all the religions that aren't his that are ridiculous. I've always been of a "who the hell gives a rat's ass if they're not hurting anyone" mindset, as were friends of mine who also got the weird little video bundle, and we found the whole thing hilarious.
It was sort of like that South Park mormonism episode, only not funny. And he said "celestial sex" a lot.