CS Park Pack Objects

So, now that Coastersims is no more, I was just wondering what the policy is on using objects from their 3D-object park pack. Obviously, nobody can put "this track requires the CS Park Pack" and give the link to it, since it's not there anymore. So if I want to use their objects, should I:

a. Just include it?
b. Not use it at all?
c. Pretend that nothing's changed from before?

I'd say use it and just give credit anyway.