I'm going to try to respond with some basic logic that the OP seams to be missing.
Meyer would have been happy as hell to keep Ash on his staff. He has has a NC and a top 10 D with this guy. He was NOT looking for any replacement at all while Ash was still there.
Meyer supported Ash to Rutgers. Meyer did not support Ash to Cuse.
Meyer would have hired Schiano as DC regardless if Ash went to Cuse/RU/UVA/Md or where ever. Meyer and Schiano are good friends and Greg was even up there as a guest this spring.
Meyer is fully aware of NJ recruits.
Meyer is smart enough to know that if RU gets the right HC and the school starts to support the team, RU will start to get more than there share of these recruits and if RU ever does build a fence around NJ, it has the chance to skyrocket up the rankings.
Meyer hired Schiano for his knowledge of defense plus a little "perception" to cause exactly what it has done already. Laughing along the way as Greg will be directly responsible to recruit very few kids out of NJ.
Schiano was actually a dick to most of the NJ coaches but during his time here, the coaches started to realize they had an option for their players that wanted to stay close to home and get some good exposure.
Schiano will more than likely do a NJ tour for OSU but that is Meyer just wanting to keep OSU exposure out front. It will create a buzz for a while but as stated above, after the buzz fades a bit, Greg goes back to being that dictating prick everyone loved so much. That won't hurt OSU because it is OSU but don't think HS coaches are drolling about how they now need to tell their players to go to OSU. that is just silly
Let's say you are a defensive recruit. Two coaches come into your living room.
HC Ash- Fresh off NC and top 10 D. Has coached Joey Bosa, JJ Watts etc...Wisc/OSU resume
DC Schiano- Big season in 2006 Big wins - L'Ville 2006 Since 2006, a couple of top 25 defenses, failed NFL coach, out of coaching going on 3 years but at least he grew up in NJ
Schiano's advantage is the OSU on his polo shirt.