I agree,  about this piece of wood being flawed some how.  Pearly is a great bowyer. however there is more to designing a bow then just width, mass, length.  One would also have to consider the past experiences with the wood.  History states that ERC is tension weak.  Therefore, a backing, would be applicable, or trapping the limbs(smaller on compression side).  I also don't understand why people ( I don't know if pearly did this?) take it down to an inner ring, Back it with raw hide, and call it good. IMO that is a tricky move to preform, because I feel like we can't follow the grain perfectly, no matter how hard we try.   So on a wood like ERC IMO if you want to go down a couple rings, then use a very strong backing like bamboo, flax, sinew.