"Honestly, I had no idea" why the flag was thrown, Matthews said Sunday. "Like I said, I got my head across, hands were down, didn't dump him, hit him within the framework, proper tackling area. I don't know. Much like you saw with the lowering the helmet (rule) in preseason, I think that hopefully the league gets to the refs and tells them to tone it down a bit, because I don't know what else to do."