You need a ground in any FMC whip over 6 feet 250.18 and if "flexibility is required" you need a ground no matter how long it is 348.60 but this installation is more troubling when you look at 348.30 and supporting/securing that FMC. I have a little thing about this because of the number of times I have pulled a floor tile under a computer room floor and seen the FMC about 3" from the connector and looking at the THHN. Joe T may even have some of those pictures that I took. They ran in IAEI magazine at least twice.
I would not run FMC anywhere that it will really be moved around much without clamping it beyond the box connector.
