Look up the history of WNKE, New Boston/Portsmouth, Ohio.
This was a full "C" station operating from a tower in Kentucky just across the Ohio River from Portsmouth (Kentucky being "C" territory, Ohio not). An ice storm took down its tower, and the FAA didn't allow the tower to be built back up to the former height. In addition, the station was grandfathered short-spaced to a station in Indiana. So, if they stayed on their rebuilt, but lower tower they would not meet Class C requirements, while if they moved to a fully spaced location they would be way out of town serving a lot of cows and moonshiners.
At least 3 stations could move if the station was downgraded to a C-0. One, to the west, from suburban Indiana to downtown Cincinnati; one to the north could downgrade from a rural B-1 to an A in Columbus, while a third Class A could move to a metro area from a dying small town.
The bottom line: After one company tried to force the downgrade with the Commission, another company arranged for the downgrade with the exchange of some cash. Both the owner of what was then WPAY and that second company were from the Cincinnati area, so I suspect they were friendly competitors.
In this case, unless that C-1 would be precluded from resuming operations at that class level because of an external change (e.g.--the destruction of WPAY's tower and the subsequent FAA denial of a rebuild), then I wouldn't hope for FCC intervention.
On the other hand, if the station is in such dire straits that they can't replace their transmitter there is an opportunity for a deal to be struck. Figure out what a good new transmitter would cost for the lower class level, then go visit them with check in hand. Propose that the Class A pay for the new transmitter in exchange for an agreement whereby the other station voluntarily reduces class in order to allow the Class A to increase in class.