Eric: Verifying individual turnouts would be quite practical, with the dispatcher making a note (written or electronic) of each one on his copy of the track warrant. To make it more certain, I'd also have the crew report each switch as they UNLOCKED it, so that the dispatcher's report would have both actions. If he had one but not the other for a switch, he'd know there was a problem. If the switch wasn't disturbed, there would be no action taken, and no notes.
Chris333: This may not help, but rule 261 in the 1967 "Consolidated Code of Operating Rules", which was still in use in the early 70s in the Northwest says:
"261. On portions of the railroad, and on designated tracks so specified in the timetable, trains will be governed by block signals, whose indications will supersede the superiority of trans for both opposing and following movements on the same track."
Rules 251 - 254 are for following movements in ABS territory, while 261 - 264 are for bidirectional movement on the same track under ABS rules.
IF this is the same rule, it sounds like CSX has been operating double track as two single-direction tracks, and now plans on running trains in both directions on both tracks.