RE: Collapsed Suspension
First and foremost, it ain't the shock that has failed.  The shock does
nothing to hold the suspension up.  Assuming a shock is the right one for
the installation your ride/suspension height should be identical even with
the shock removed from the vehicle.  Shocks will limit downward travel is
there is no load on the wheel but should have no effect when the vehicle is
stationary.
So look for some other suspension component that has failed.