Possible to override Garnish.Modal? [Plugin] Is there a way to override Garnish.Modal? 

For example, I have a custom modal which uses a custom form but I want to be able to use the built in forms.elementSelect to select from a user list. When I select a user and press "select" it closes both my custom modal and my user select window. 

Can I override this to just close the most recent modal?

This is in reference to Custom Modals inside Plugins: How can my plugin generate a generic modal window in the Control Panel?

Edit: It looks as if Garnish hides any other modals before loading a new one.
By default, Garnish.Modal will automatically close other modals when show() is called (which happens automatically when you first create it).

That behavior can be overridden by setting the closeOtherModals setting to false, though:

var myModal = new Garnish.Modal($container, {
    closeOtherModals: false
});