Tempered Glass Shower My Shower Door Is Not Trued. Can I Sand The Tempered Glass Door?

My shower door is not trued. Can I sand the tempered glass door? - tempered glass shower

I have a sliding shower door was not closed properly, and I have to pay for an edge of the cup so that the door can not be maintained, the distance from the wall. I think grinding and after 1 to 5 mm of glass from the edge. This is made of tempered glass. Can I sand, without the glass?