Truth be told it is a homophobic slur, intentional by JT or not, some will take offense. Being offended is not a legal matter and it was not directed at anyone in particular to be called a hate crime neither. I think it happened, JT is embarrassed that either A: he was caught or B: he is mortified that the word even came out of his mouth. His reputation has taken a dent and no further action is needed bar an acknowledgement from the tour, if he does it again then its time to punish.