Haha, Rob.... I've gotten the dreaded "Saran Wrap Roll" a few times myself.
Interesting technique, and like you say... not the preferred method. But it definitely beats that horrific Redskins fold-over job. I'd return that one just on principle alone.... even if it does iron out.
Excellent work by your seamstress... that's about the best result you could've hoped for on the Jets. Looks great! So did she do both the removal of the old spine and the addition of the new? Beautiful work and great pennant!