Thank you Everyone for your comments and advice! Here is how it all played out:
I initially decided I would take a later flight home. But H was clearly not enthused by that.
I slept on it, and in the morning decided that a couple extra hours in Disney was not worth all the stress this was causing. So I told H that I would come home with him on his 6:30am flight.
Then I got to thinking: we have just backed ourselves into a corner where neither one of us will feel good about this trip.
If I come home on the super early flight with H, I'll be disappointed. And H will feel bad because he knows I'll be disappointed.
If I come home on a later flight, H will be disappointed. And I will feel bad because I know he'll be disappointed.
So I gently suggested we just cancel the whole trip and try again when the timing is better for both of us. After all, Disneyland is not going anywhere. It will still be there next year.
And then my H started to turn into a DH! Imagine that!
He insisted he really does want to go. And the more he thought about the super early flight and all that it entailed (getting up so early, having to go to bed early the night before) the more he liked the idea of taking an afternoon flight that gets us into PHL around midnight. He said, "I'll just sleep on the plane."
(Um, isn't this what I suggested yesterday? And what you had no interest in when I suggested it? Yes. But we won't bring that up.
)
So we are flying home on a 1:30pm flight that gets us into PHL at 11:30pm. He can sleep on the plane, and he can sleep in the car as I drive us home from PHL.
And they lived happily ever after.