How can molluscum re-appear after all growths have been eliminated (perhaps from a towel when i was infected??) person to person contact ruled out..

Recurrent molluscum: Probably you didn't catch it again; more likely your previous infection has recurred. It takes the immune system several months to become fully effective against the molluscum contagiosum virus, and new lesions can reappear for quite a long time. Eventually it will stop, however. In the meantime, see a doctor, preferably a dermatologist, for treatment advice.