He was absolutely a last minute hire because McCarthy was a last minute hire. Remember, Garrett was allowed to play out his contract, he wasn't fired so a staff wasn't put together till January. Don't tell me what you don't know. Good Lord, how can you expect to have a civil conversation when you won't even acknowledge simple truths.
Front Office positions? Yeah, this is also incorrect. John Garrett, was not in the Front Office, I don't believe. He was a TE Coach and he was a Jason Garrett hire in 2007. Judd Garrett was Director of Pro Scouting, basically a Scout, but front office, hired in 2008. So again, all hired after Jim Garrett had left the team and all hired while Jason Garrett was HC. If you had said that it was Jason Garrett, that would have been more believable.
Your idea of valid, leave much to the imagination.