Time heals, yes, for sure, but I think the thing that worries me here is not necessarily the "how he left" but some of the rumors surrounding his extracurricular activities both here and at Purdue. If those rumors are true we dodged a bullet when he left. Now, I have no idea if those are true. Insiders here have hinted at or outright said they are, for whatever that is worth.
In any event, I am sure Bielema knows whether they are or has at least a good idea. If Bielema knows there to be truth to those rumors, I would think it would be a pretty big risk to bring him back, both for the program and for Bret himself. No doubt he as a very capable defensive coach - top notch actually. But with off-the-field stuff like that there's always the risk it comes back to bite you big time and if we can find a good coach without those issues, I think it's a no-brainer. I'm hoping this is at least being taken into account and not just brushed aside.