Not saying you're wrong, but I found your statement interesting. I did a quick search and didn't come up with anything, not that it proves you wrong or anything. The reason I was surprised is that I thought that Matta was one of those coaches who supposedly "did things the right way." An OSU fan friend of mine joked that he had to be, because his recruiting recently has sucked so bad.
Pure speculation on my part, but I think OSU just got freaked out by the apparent downward trajectory of the program. Since Matta had raised the bball expectations, along with football's success and expectations, the AD did not feel Matta deserved more leeway. AD probably wanted Matta to get more into recruiting, which means flirting with the AAUs more and potentially dirty lines. Again, maybe YngC or others can share info if they have some, but I'm just speculating as a fan. Maybe Matta is actually dirty, but I believe he's supposed to be one of the old school "good guys."