I am not a script creator either, so here is the way I would do it with the Expedition tools...
Here is a sample with the Silk
Then, Create a User Layer called RemoveSilk, and add a Filled Polygon to the User layer where you want the Silk removed
Then, on the Output menu, use the Mask Generator as shown here and Process.
It will create a new user layer called NewSilk, use this for your Silkscreen output. No need to move silk to somewhere else, as the Original Silkscreen remains intact.
Give it a shot.
Thanks for the hint.