Sorry, but I think you're out of luck. Like it says:

As a result, the actual removal date may be subject to delay due to such Maintenance Events. (The removal will never occur before the aforementioned Removal Date.)
It all depends what the maintenance is for. If it's something where they shutdown the server then it likely stops counting for the part where the server is shutdown, at least that would make sense as to why it's ambiguous.

But they also say that it'll never be before your removal date so that was the date you should have used, not relying on maintenance to extend it.

So it wasn't really released early, it just wasn't extended as much as you expected due to maintenance. Sorry that you lost your house though.