This is the
FCC's "Double Secret Channel Scan!" All kidding aside, listen to the man -- this does the trick.
This is pretty much the process I had to perform two months ago when two of Denver's stations flash-cut digital operations from temporary UHF assignments to their original allocations on 7 and 9, and again on June 13 when a third station migrated. The only thing I didn't do was detach the antenna coax, but thankfully, it worked anyway.