To be fair it's his career so I've got no issue with him turning jobs down. It's very, very easy to lose your reputation as a manager/ head coach. He did pretty well overall at Hull but if he fails in his next role he probably won't be getting the likes of Burnley, or even us in our current position, wanting to speak with him.
Given how vital it is for him to succeed in his next role I think it's absolutely fair enough for him to walk away if something doesn't feel right, especially if he feels he won't have enough autonomy to feel confident that he can achieve the results needed. We don't know why he walked away, but if I was him I wouldn't be risking my reputation on whoever Speakman signs (especially given recent windows) and having to hope I work well with the existing coaches.
There's definitely a risk that burnley don't want him and he might have a long wait. Might even end up having to take something less than ideal just to get back in the game if things go wrong, but that's his risk to take and I don't think he's yet at the stage of having to take something he's not sure about. We just need to look at why we've struggled to attract anyone and decide whether we really want to be headstrong and crack on as we are, or whether we might benefit by making a few changes