I was in this situation. I taped the switch on the activator (green) closed.

One of the attachment posts was still partially there so I screwed the activator back down with that, and pulled out the spring and shortened the white pokey (that would normally hit the switch) so it fits with where I taped.

We'll see how long it holds!

Just did this successfully, thanks for the steps.

I’d suggest adding to BE CAREFUL WHEN PRYING OUT THE BATTERY. #1 there is the screen cable under there and if you damage that, then have fun getting a new screen. #2 lithium batteries can ignite when punctured (like I did). Go easy working your way in and take note of where the screen cable is (lower black cable in step 9 image).