You read one post and think, oh no - the airport is going to close, then you read another and think, oh yea - that's true, we're safe. The confusing bit about all of that is whether you read a bad post or a good post, both are true, and now, I don't know what to believe.
It would seem however that BD are just using the MME-LHR route as slot protection, you'd think they would knock one or two rotations off several domestic routes to make room for LHR-USA flights, rather than cull entire routes, that way, you still keep the domestic flights to feed the transatlantic ones.