Parchment paper and crumb crusts?
there! I just came across your post and wanted to share the secret to getting the crust off of your springform pan in one perfect piece, with all of it intact. Ready for it?!

...The base of the pan is upside down when it's packaged! I'm not sure why they do that, but I have bought many springform pans and they all come that way. I don't know why, but it really is rather ridiculous. Especially because, as you have learned, you end up leaving half of your crust behind. So, if you flip the base over, it's a bit raised and your entire crust will come off very easily, especially if you have a cake lifter. I never line the bottom crust with parchment paper because it's not necessary when the base is turned the correct way.

Good luck!  :-)