Steve,
If memory serves, I've had at least three yew bows blow in about 30 years. They are especially memorable because they usually end up in about 15-20 pieces - you won't be tempted to glue them back together for a wall hanger! More than any other wood, they seem to develop a "memory" for the guy who shot them first - draw it an inch or so more than he did, and you may be wearing a bunch of splinters! I'll defer to John Strunk, Jay St Charles, or anyone who knows what those guys do about yew, but my own take on it is: if it is important to you, "leave yew on the wall!"
Now, Osage and hickory are a different matter....
Years ago at the NA Longbow shoot, was my group right after lunch and one fellow-great guy- made a poor(low)shot. Then he remarked "that's what I hate about yew in the afternoon." I've never been accused of being a comedian, but suddenly it hit me and I said: "well, I don't think so damned much of you in the afternoon, either!!" That was likely the biggest laugh I've ever gotten, and so I never took my comedy routine on the road!