Nahh i dont buy it. Ford could of been a host, but if this was the first world, AKA west world, and the others followed it, why would Ford not be there, in the main hub? You saw the samurai yourself in Westoworld Hub, right? So this leads me to believe that westoworld IS the entire hub and therefore Ford works there.
I think Ford and his dead partner are like a good vs evil thing going on. Ford was the kind of evil while his partner was good. Ford realized that his partner was right all along, the hosts were becoming awakened, more and more thtrough the years. His partner wanted to shut it all down, while Ford did not believe it at the time and wanted it to continue. Then toward the end the board wanting to take it all away from him, MIB buying the entire thing, people inside wanting to steal the code, it was the last Fuck You to the world, go out with a bang. Help make the changes to the elder hosts so they are aware and awakened, and burn the world down. If he cant have it no one will type of thing.
This entire story is AI gaining consciousness and trying to gain their freedom VS oppresive and destructive humans. Not trying to make a better hardcore server.
Also the entire end scene with Deloris killing everyone, sure those could of all been hosts, but why? why have a reveal of a "new narrative" to a bunch of hosts? And then when Deloris finally wakes up and knows WTF is up, she starts killing other hosts? Nahh, not buying that shit.