At the risk of beating a dead horse or feeding a fed horse (sorry PETA)... I don't think there's any substantial reason to hold this opinion, at least not yet. Let's get the low-hanging fruit out of the way first and say this is all alleged. Innocent until proven guilty.
Second, legal precedent and the circumstances surrounding what he's accused of doing suggest the very plausible outcome that he would likely only receive probation/diversion if he were to do something like take a plea deal.
Lastly, the university has chosen so far to stick with Mo, despite being well within their right to back away from him and provide distance. This suggests they're going to wait and see what the legal system says. If Mo gets what amounts to a minor penalty or slap on the wrist, he will probably be back on the team. The only thing that would likely remove him from the team is if the legal system causes it.