  Let N be the moduli space of stable rank 2 vector bundles on a smooth
projective curve of genus g>1 with fixed odd determinant. With Sebastian
Torres, we previously found a semi-orthogonal decomposition of the bounded
derived category of N into bounded derived categories of symmetric powers of
the curve and, possibly, a phantom block. In this work, we employ the theory of
weaving patterns to eliminate the possibility of a phantom, completing the
proof of the decomposition conjectured by Narasimhan and, independently, by
Belmans, Galkin, and Mukhopadhyay.
