To be clear, your "definition" is not the rule book definition, it is the Wikipedia definition. Here's the rule book (see page 47):
https://www.ncaapublications.com/productdownloads/BR22.pdf
I guess as long as you consider the action to be excessive, that means that it would be a flagrant by your reasoning. But the definition of excessive in the rule book is "unwarranted or too much." To me, a play like Jones's where he was boxing out and establishing position, he made a regular motion, far from excessive. If it wasn't above the shoulders, we wouldn't be talking about it as excessive. If you deem that excessive (and you determine that partly based on JCL's reaction), then I'd say you can make an argument for the moving screen as excessive, based in part on Kalscheur's reaction.