Comics Should Be Good tracks the changes that happened to Nightwing #115 between solicitation and publication. DC seems to have truncated Devin Grayson’s storyline with Dick Grayson undercover as a villain working for Deathstroke.

Just from the copy CSBG provides, it looks to me like they took connections to Villains United out of the title. We know Grayson was concerned about crossovers having ill effects on superhero comics; maybe that’s the kind of thing she was talking about.