Moving an array of polySurfaces in xy Help!

Hi
Hope that someone has an idea to solve this, have tried a number of ways but nothings working.
See the attached file, I would like to "distort" the array of slabs of the object in the center like the one on the right.
I tried to either make the whole object in GH an then distort it or build the object in rhino first and the distort it but no luck either way.
Have tried a law-curve but since I have to move the slabs in both x & y direction no luck there. And its vital that the slabs has a "continues motion" (soft transition) in relation to the next slab.
But maybe I am doing something wrong.
No home-made GH-def that is ok to show for the public, and newbie to GH so any help would be greatly appreciated
Best regards
Per