I would have grabbed the bat after the first warning, put it over with my equipment bag, and tell them they'll get it back after I send it to the local softball office (if it was league play) or after I send it to our district UIC or Commissioner (tournament play). Teams know not to bring that stuff on my field around here because they know I'll take it from them. I know, I know, no rule justification for it, but you can't imagine how many thanks I've gotten from our local ASA officers or the city softball office for doing it.