This was a smart move by Richt. It is obvious that Banda and Patke were headed to Temple with Manny. The promotion solved the problem of a DC and prevented 2 more staff members from leaving. Since Banda had been with Manny for so long, I would expect that he will make the "in-game" decisions. My expectations is that we role with the same defensive blueprint that Manny laid out. This way Banda and Patke can start working on the decommits to try to get them back in the fold and also sure up the recruits already committed. Had Banda and Patke left, we would have lost most of our defensive recruits.
This buys Richt a year to find another DC if Banda and/or Patke are not up to the task, but I think Banda will show his chops after working several years with Diaz.