The TSSAA has been trying with all their might to get the privates out of DI, and when CA offered to move to D2, the TSSAA jumped on it. As far as the new region getting harder by moving to 2A, I can't imagine it was much worse than having Huntingdon and Wayne Co. in your region, as CA did in 1-A. I'd think as vehemently as the publics had complained about having to play the privates, they would be overjoyed that CA jumped, even if it did cause a coach to have to juggle the schedule a bit. CA hadn't exactly been dominating all opponents in DI, though it had been competitive in most sports. There were a handful of privates that seem to have spoiled the fun for everyone else, but that's another topic. Regardless, it's over and done, right or wrong, by the TSSAA.
Personally, I think the school is sitting on a gold mine of talent in Montgomery County, and if they execute the right plan with the right coaches, a sleeping giant may be awakened by the move to D2.