You don't hide anything, just create new widget, with is by default hidden/invisible/unpainted into screen, and then show it.

I need to Disable the Widget Background and keep the Top level widget enabled..
Please help Us help You. Describe Your problem best You can, and If that's necessary add pix into post for better understanding. Currently I don't know where is your problem, and I think the solution that was posted is what You're looking for.