Ok I'm done with the 666 thing, I've had my fun with it.
Right then, the Canceled Dair thing. First of all can I just say that I was very impressed with the explaination. Quite clear. Unfortunatelly, after testing a few things, I still haven't been able to re-create what happened (which is becoming a pattern lately that I'm not happy with myself about.)
So a few questions. Was the boomerang invloved? It seems obvious, and I'm expecting the answer to be no, but it had to be asked because the boomerang is the only thing other then Bombs, slanted platforms and momentum that affect the Dair, and these things have, to some extent, been ruled out.
Another thing is, you said that you were able to Bair before you touched the ground which was a big hint because you obviously weren't planning on canceling your Dair then Bairing. So were you just mashing? How did you Bair? With the c-stick or normally? If the c-stick was involved, then this could be importaint.
Things I've tested:
I've tried to find a spot on the edge of the platform where this might occur by slowly moving towards the spot where Dair lands on the platform. I've repeated this over and over again, always in that spot, hoping that I might hit that exact part that would allow this to happen. But even though I did this for a long period of time on various occasions and speeds, I couldn't find the sweet spot.
I tried altering my tragectory even slightly while in the Dair. But no matter what I tried, the Dair ALWAYS goes directly straight down (Unless of course momentum is invloved).
I figured, you may have been mashing the c-stick and joystick back the other way and maybe if you landed right on the edge of the platform, it might slip off. Unfortunatelly it didn't.
Other variations of the above were tried, with no such luck.
So I'm thinking, we have to be missing something. If you say the boomerang wasn't involved (which for now I shall presume) then as I said before, it leaves only a Bomb, slanted platform and momentum. The Bomb we can be sure of, because you would have noticed the boom. The slanted platform we can be sure of, because it's Battlefield (duh). But the momentum we cannot be entirely sure of. Even though you said, your momentum was under control because you double jumped out of the tornado, how can you be sure that you weren't going down slightly slower when you only went from inbetween the top and side platform to the edge of the side platform? That's not that far. Also, the Double jump doesn't completely stop momentum, just look at the Dair stall (Double Jump out of momentum then Instantly Dair. You go up and stay up for a bit).
If you still had a bit of momentum, then the properties of the Dair would be very different. For example, the Dair can go slower, with the Dair stall you can move left or right while in the Dair, and when you hit an opponent you don't pogo instead you continue to go down. My opinion, momentum affected the Dair in some way, and this allowed you to cancel it..... some how.
I'll keep trying to test it, the only problem is it's very hard to Dair in a precise location over and over again to try different things every time.
Any other thoughts?
Edit: OMG!!! This is the 777 post!!!! I went form 666 to 777! XD