Euh... Thanks but no :-)
I can clearly see from your pic that the bar is hold at the extremities. Gentle spray there from the top will deliver enough lubricant to resolve the problem. Which I did and so far so good.
But thanks for the detailed brain surgery protocol :-)
That's a plate mounted cherry stabilizer.
Desolder the switch and remove it. You will then be able to remove the stabilizer through the slot. 
Show Image
Pardon the quality.