Deselect cell

Is there a way to deselect a cell?
I'd like to be able to lose focus on a cell.

For example if I have a selected cell and then I click on a column's header for sorting then I want to deselect the previous cell and the next time a user will use Tab then cell (0,0) will be focused.

I tried to reset cell values (rowIdx: -1, idx: -1) but since it's out of boundaries my selection is not applied.