I have to be honest. I don't really know what Reggie defined Sola Scriptura as. On your story, Mr. C sounds alot like me, I tried hard to reconcile what I was reading in the bible to catholic teachings. But it can't be done. So I left and found a church that interprets the bible the way I do. And I know I'm right because I know it's from the HS. But I can't tell you why. I know that sounds like a cop out, that is how I use to feel about that kind of remark.
As far as the term sola scriptura I think it is a, ohhh, slanderous term, that is used by catholics. Sorry, that's how I feel about it.
Becky