Doesn't really matter when it happens; if it puts the NFL in a bad light then they could punish him further. The NFL is already struggling with dipping ratings every year so they don't need their players getting arrested, no matter how minor the charge is.
On a side note: the whole situation is ridiculous. The Uber driver? Dumb fuck could have just let Humph keep the charger and gotten an autograph instead (if he didn't get one already). The autograph would be worth way more money than a $15 POS charger. The officer? Dumb fuck should have just made Humph give back the charger and given him a warning. I'm sure other Alabama students have done far worse things while drunk and not gotten arrested. Humph? Dumb fuck should have realized that the Uber driver valued his $15 charger as a prized possession and just given it back. Also, I don't know how drunk he was, but if he expected to handle 3 women in that state then maybe the officer saved him from embarrassment. C'mon man....