Stripped Screw in Tundra Bed Rails

Trying to install my Bak Revolver X4s and I need to take off the side rails in the bed. Annoyingly one of the screws was torqued insanely too much and I completely stripped the screw head. Now I can't get off the driver's side rail. Trying to figure out how I can get it off, my grinding wheel on my Dremel doesn't fully reach it (1.5" wheel) when holding the Dremel at 90 degrees when I try to make a slit and use a flathead.

Anyone have ideas, since I need to get this cover on by Monday.

 

https://www.homedepot.com/c/ah/how-to-remove-a-stripped-screw/9ba683603be9fa5395fab90160abf30b

Or get an extractor.
https://www.homedepot.com/p/DEWALT-...Extractor-Set-3-Piece-DWAMIEXTRACT3/313982175

 

Can you grab the head of it with some needle nose vice grips?

 

https://www.tundras.com/threads/stripped-t30-bolt-bed-rails.107653/