Point to his innocence" In which case? Right now the only thing we know about that points to his guilt in the MH case is that there is some forensic link. That's all LE is saying in terms of what they have. The MO is strikingly similar, incapacitated college girl in need for a ride which JM was able to offer. Both girls accepted rides and that was last seen alive. But as for innocence on part of JM, up until the Hannah Graham disappearance, there was no indication that LE had JM on their radar for MH. They have denied interviewing him during that time, made a special announcement denying it.
In the Hannah Graham case, the only charges that were on the table agaist JM were the reckless driving which he brought onto himself after the he was being watched but NOT charged with one single thing about Hannah, and the Abduction case that came about after LE lost track of him, and there is no reason given to filing that charge; it may well have just come about upon researching what the heck else the state could charge him with. Unless they find Hannah and there is good evidence with her, the strongest charges may well end up being whatever forensic evidence MH has on JM, if indeed that is what LE has.
We really don't have a lot of specific evidence nor has LE filed many charges at all against JM. The collection of facts fits with JM as the perp, but whether it can hold up under the standards of the court is a whole other thing.