Is there a combination of actions I can perform to get a grid back into 'initial state' – where the grid is initially hidden (hiddengrid: true), contains no data, AND will reload itself when the user clicks the arrow to unhide the grid?

I am able to clear the data and trigger the click event to 'hide' the grid (collapse it so on the caption bar is visible.

But the grid evidently remembers it once had data and doesn't reload itself just from the 'unhide' button click.