The RPR will be partly based around the time of the race though, so you could mark it up based on the argument that the time is nonsense. How much you or anyone else mark it up is obviously open to opinion, as are most things in racing.
I'm certainly willing to give Chapeau De Soleil another chance, even more so at a left handed track, if he doesn't win next time out then I could understand the reservations, for sure.
Worth noting ferny was beaten twice, so maybe even if CDS does too, wouldn't write off, in theory. Obviously depends on the manner of defeat.
I myself had Ferny at big prices but had completely written him off and when he won I couldn't remember if had actually had him backed him still. Luckily it was a bet that I couldn't cash out and completely forget/dismissed.
Funny game at times.