[RodB]

Yeah, we don't need to see a picture of you getting out of bed.

I'd say you've done enough work on that stain. You proved it's more permanent than it's worth to remove. And it looks like sanding won't help take it out. But you can try a small section and see what happens. So, from here you put effort in to working on removing the stain or replacing the veneer. Now try to see the end result of each.