Janus, i've never plead [or been acccused] of any sex crimes but you plead to whatever you can live with. most of the time, you'll be held in jail til you plead guilty to something and get released on probation so its a matter of the DA offering you a lesser charge than you went in on. if it's a misdemeanor but you're considered a flight risk, it's often best to 'eat the charge' and get out.
haven't you heard the brouhaha about how bail is predatory on poor [criminals]? people all the time plead to shit. i can't speak on Statch's sitch but it's common.