It is entirely possible that what happened in the first ten minutes was not sexual assault. It is entirely possible that what happened up until that video ended was fully consensual. It is absolutely possible that the alleged crimes happened after the video ended and after JD 6-8 were long gone.
Remember, using Blackstone's Ratio literally, a guilty conviction means that the convicted person is at least -1000 to actually be guilty. If that standard can't be met, the conviction can't be given. And rather than open the NHL up to all kinds of potential litigation issues and all manners of union battles (because as Duke Lacrosse vs OJ shows us, not all odds below -1000 are identical), they could rightly be understood to set the standards based on what happens in the legal system.
And with that in mind, "indefinite suspension while charges are pending, suspension until after any legal penalty is concerned, reinstatement handled on a case by case basis" is the most logical way the NHL could navigate it; it's allowed them to handle the two very different cases of Slava Voynov and Austin Watson in appropriate fashion in the past, so I (for now) have faith in it here.