Singer, who’s owned a building next to Boxers and has had a presence in the neighborhood for years, said he’s not motivated by hate or homophobia. He said that he tried to intervene in a liquor-license transfer out of concerns related to health-code violations and that his intervention isn’t what shuttered the bar. State records show the owners themselves put the liquor license in “safekeeping” status at the end of January, a pause they could undo at any time.