I probably should also attach another photo, as I've described this but am not sure if I described it well enough. Bascially, when I mention decrowning, I don't just mean that I violated all of the back equally (as you're supposed to do when decrowning a stave for a flat bow). I decrowened it overall but in some places shaved it down a bit more than in others to give the back a uniform shape. I see this in a lot of the originals (like I said previously, I never have seen a western sinew backed bow that was snaky or preserved the orignal crown shape) but it does mean that when I am talking about a violated back, I mean a back that is overall largely unviolated or where the violation fairly limited and then one or two small spots where the violation is quite strong. It's what happens when you flatten these hills and bumps on juniper, and with rings being so close together, it's far more apprent.
But from this conversation, it sounds like if I am correct overall with how I understand sinew, especially on a soft confier wood like juniper or yew, that this degree of violation in only one spot still shouldn't provide a problem? I know I am probably being paranoid like I usually am and I am not giving up on this stave for the moment (I spent the last bit of time recurving it, floor tillering it and still getting the sinew ready).