Possibly referring to this? http://physics.aps.org/synopsis-for/10.1103/PhysRevLett.116....
Background: https://en.wikipedia.org/wiki/Gravastar
Background: https://en.wikipedia.org/wiki/Gravastar
This creates more interest, but can obfuscate what the real situation in the field is. In this case, while Gravastars are certainly something many scientists actively do and should consider, there is no real evidence from the LIGO data that favors the hypothesis of "we are in a universe that lacks causality" over the observation of the merger of two Kerr black holes.
Yes.
http://journals.aps.org/prd/abstract/10.1103/PhysRevD.94.084... (preprint: https://arxiv.org/abs/1602.08759)
So you're still left with gravastar models that can co-exist with black holes.