Help! Top interior part replacement

[mtrocket]

I don't see anything about this part replacement in the service manuals. I need to replace the triangle-shaped vinyl piece in the interior since the vinyl melted when I had the fluid leak before SA. This piece covers the top hinge on either side at the quarter window. I looked at the attachment points and can remove the front attachment quite easily, but can't see how to remove the rear attachment from the hinge area.
Any help would be appreciated...

 

[mtrocket]

Got it figured out... had to put the top partially down to access the screw that was holding the rear plastic cover.
Since this piece lists at $260.83 (yea, I can't believe it either... for a piece of vinyl), I'm going to see if an upholstery shop can't replace the vinyl for me - at a fraction of the cost.