K2r, I'll respond to your question, but let me state that I do not have any input or inside knowledge into the decision. Having said that, Mike has always shown a deep commitment to KCHS and the volleyball program so it would not surprise me if he were involved in some capacity.
I think that many commenters on this website fail to appreciate the investment Coach Jones made to assure that his successor was successful. Perhaps that's because he never toots his own horn, giving others credit for success and taking the blame when things don't work out.
Coach Jones spent two or three (I forget) years grooming Coach Garland and left at a time when the team was moving down to Class AA from Class AAA and the roster was loaded with experienced talent. The 2013 senior class had only three players but all three played varsity as freshman including a MB and OH who were All-State. The 2014 senior class had 9 very experienced players of which 2 did not play their senior year. Once Coach Jones passed the reins to Coach Garland, he was very careful never to steal the spotlight. However, he still supported the team behind the scenes and could be seen sitting in the stands during matches taking notes. I am sure that he is as disappointed as anyone that things didn't work out with Coach Garland.
I am sure that Catholic will be competitive next year. However, the new coach, whoever that may be, will not have the same benefits as Coach Garland did his first year. There are only five players returning from the State Tournament varsity roster. The JV had a good year so some of them should contribute. The strength of the roster will somewhat depend on how many of the three experienced upperclassman who left the team under Coach Garland decide to return (not blaming Coach Garland for this but just stating the facts). I also don't know how reclassification will effect volleyball next year and how that could impact a team's chances at making the post-season.
In any case, patience will be in order. I just wanted to provide some perspective so that others will not jump to conclusions if next years' team doesn't have the same success as this years' team.