The Carolina Panthers are 0-6. They had to do something, and something in this case turned out not to be firing anybody, but instead for head coach Frank Reich to hand over play-calling duties to offensive coordinator Thomas Brown. It remains to be seen whether this is simply rearranging deck chairs on the Titanic or something fruitful. We’ll start learning which one it is on Oct. 29, when the Panthers return from a bye week and host Houston (3-3) in a somewhat winnable game. That Reich — a noted NFL play-caller — is suddenly abandoning the idea of calling plays and handing over one of the par…