Non Linear - forced deflection, then remove constraint

I'm thinking I am missing something easy here, please help me out..

With non-linear can I force a deflection in a certain direction using a fixture , then remove the fixture completely to see where it remains at rest?  I tried using the time curve but if I put it to 0 on the last step it forces final deflection to be 0.  I want it to be free.  How can this be achieved?

Thanks

Bruce

SolidworksSimulation