This was all common knowledge when OU hired him. The plan was two-fold. Joe C would show the NCAA Infractions Committee that OU was serious about cleaning up its act after two investigations in the previous six years, by hiring someone who squeaks when he walks. Also, OU would allow him a much higher recruiting budget in hopes he could build the program back to where it needs to be.
Coach Kruger has already shed his past results in two areas. One, he had never taken the same program to multiple Sweet 16 appearances. Two, he never had a program peaking by its 5th year - he actually had improvements each year for the first 5 seasons.
Now that he has conquered those two goals, he needs to find a way to keep the program strong and clearly deserves the chance - if he wants it. Losing Pritchard as shown to hurt more than expected. If he loses Young, it may sting even more. Coach has never been a great recruiter. His success is mostly due to his ability to "evaluate talent", and good luck finding a coach who is better in that regard However, Coach also knows that under-the-radar recruits like Buddy Hield do not grow on trees. He needs to capitalize on OU's Final Four. If he doesn't, I really believe he'll retire after next season...but he deserves the chance to see if he can get this fixed.
Finally, those who said losing those top assistants may hurt more than we know it are correct. My first thought with the replacements is that he traded down. Of course, I'm hoping to be wrong...and we'll know soon enough.