Help Can I blend in and out of simulation?

[harut]

I have a cloth which is a skinned mesh renderer, and a looped animation, at the start of the animation I want the cloth to behave as a regular skinned mesh renderer without cloth simulation, at some point in the middle of the animation I want to enable the simulation, and at the end I want to slowly disable it and blend back to regular skinned mesh behaviour.
So essentially I want all particles to be pinned at the start and then unpinn them at some time. Ideally I would like to blend between these 2 states, but if blending is not supported then just switch between pinned and unpinned.