Yes, what he is calling stabilizer bars are probably upgraded anti-sway bars. The CHF is the Cheap Handling Fix. Anti-sway bars have two holes in the end where they attach to the link rods. F53 based motorhomes generally come from the factory with the links attached to the outermost holes. The CHF is moving the links to the inner holes. This stiffens the anti-sway bar thereby reducing sway. If you go to the Ford chassis forum on iRV2, you will find extremely long discussions about the CHF and chassis upgrades in general:
If you do have upgraded anti-sway bars, I am surprised that you would still be having significant problems with sway. Since you are going to get a front alignment anyway, take your Vista to Josam and see what they recommend. They have lots of experience with curing handling issues on motorhomes.