Aoi moves question.

How DARE you!

Just teasing. (for all you know I never play aoi so the advice is sound).
To the original poster... multiple throw escape inputs don't work. You can only escape the part coming up, and only in the window allowed (which is generous I think). I actually spaz on d+P+G to guarantee that I eat only one part, two at the most. I'm a big advocate of spastic escapes, heheh.

 

And (finally) does anyone know if it is possible to escape the low throw after a MC b, d/f+P+K crumple down?

As far as I know, it is possible to escape the low throw. A better followup would be f+K, K. It's guaranteed damage, and depending on the opponents response (whether they TR/QR) Aoi can force the okizeme game, or go for the ground punch or ground throw.