In the case of Armstrong we appear to have at least negotiated a decent sell on clause. Although how that ties in with Bruce saying there is no money to spend i have no idea.
Makes that piece Edwards wrote wanting people to feel sorry for Bruce sticking by the club even more laughable. He's more than happy to be front and centre for Ashley.
Why would he quit? The job is exactly as he knew it would be when he took it. He's more than happy to toe the line with Ashley and so he's more than happy to keep him. He's Ashley's perfect manager.