It's important to understand that even though the chances of a trial are very low, what *could* happen in a trial is directly relevant in the plea negotiations.
This is why we're talking about it even though I think every commenter here is agreed that a trial is, while possible, very unlikely. The only reason I give credence to the idea at all is they've picked an experienced trial lawyer rather than the usual public defender who pleads everything out.
That said, the very fact that he is an accomplished criminal defense lawyer who can take something to trial and win it puts him in a very good negotiating position, too. Even with a trash case, which is what he has, just the mere threat of actually taking it to trial has negotiating leverage.
At this point, I wouldn't be surprised if he drags it out the full year because then they have to shit or get off the pot. If they don't, they have to let him go, and without felony charges, he's already served the max J&DR could give him anyway. I wouldn't even be terribly shocked if the prosecution goes for this too, effectively a "pocket dismissal" where Chris walks after a year and nothing happens.
That would be as close as Chris gets to completely getting away with it.
There is no minimum sentence. Class 5 felonies can wobble down to a Class 1 misdemeanor, which means there's a maximum one year sentence or a fine of up to $2500, but no minimum. If the sentence is longer than one year, then it is a felony, with a maximum ten year sentence.
It would have to wobble to stay in J&DR which does not have jurisdiction to impose sentences longer than a year.
I don't see how or why the court would put up with that, but it's technically possible.
Maybe he's some kind of procedural wizard in addition to being a trial lawyer. Or as you also pointed out, maybe the prosecution is okay with it and this is part of some deal they already cooked up as to how they're going to approach the ultimate plea.
I have really gotten the impression during this that the prosecution, while not wanting to let this case go, is not really eager for a huge public trial because this case is literally an embarrassment to the county.