I don't know what happened with the Pastorious Family, so I cannot comment on that. I did visit this location once, when my Steinberger bass needed a lookover at Peekamouse Guitars, which is on the same block. Peekamouse is an authorized Gibson service center, and well known Steinberger service center. They do excellent work and have a Plek machine which is mucho bucks for the service, (but it's only green stuff. Doesn't the President want us to go green?).
The guitar selection was pretty impressive at 30th Street Guitars, but as a bassist I was very disappointed with the lack of bass selection. This item is unusual for them to have, at least based on my experiences. However, that is an excellent heads up, caveat emptor, if the Pastorius family lawsuit involved them. Thanks for informaing us (another reason why this forum is so excellent IMHO), but be mindful of slander laws, if applicable.