Bowman i saw your hick bow, i liked it. But it was also 62" long, each limb had 4" of limb more than it needed for a 27" draw, which is why you didn't have any problems. It also was not a deep design, it was fairly thin. You actually stayed within the working limits of hickory, and did well at that. (BTW, the 2" width i stated was intended for a stiff handled bow, forgot when i typed it that we were talking about a bendy).
SS's bow was WAY narrow (an inch or under if i remember correctly), even for a light bow and had a D cross section (hickory would almost rather have a reversed D section!). The tiller didn't look to have any problems with it actually. I suspect if it was wider and thinner whatever broke the camel's back wouldn't have. He asked how to prevent chrysals and you do it by not overstressing the belly (aka wider and thinner for hickory).
SS, you'll learn a lot in your 2-day class. Just keep in mind that all woods have their strengths and weaknesses. Learn the strengths and use them for each wood. Build as many bows as you can muster, learn from each one and apply to the next.
