he was obviously expecting you to throw him meat, and turned his back on you when you didn't. intentional or not, that's teasing it, and teasing a tiger isn't a good idea. it demonstrated it's displeasure.
the big area may seem like a good idea, but you kind of can't have it both ways with a "pet" tiger. you either need to leave it in your house and treat it like a dog, or you need to leave it in an enclosure and treat it like a wild animal. the reason is that the tiger is spending it's "alone time" being a tiger, rather than being a dog or a pet, which enforces various instinctual tiger habits. like eating humans, for example, which happen to be a part of a tiger's natural diet. there's an evolutionary relationship, there; a predator-prey relationship. don't forget that. but it's not really a consequence of a tiger being "wild" - the same thing happens when you leave a dog outside all of the time.
it's easy to think "a tiger should have a big area". and maybe that's true. but, a tiger in a big area stops being a pet and starts being a tiger. what's important is that that shift in mindset is not just understood abstractly but enforced concretely.
it seems like you want to put a lot of effort into this thing. and it's easy to anthropomorphize. but i see a lot of warning signs in this video, and need to request extreme caution.