They've got issues throughout most of that pen, not just the 9th inning. Adding quality relievers, which Kelley and Glover are will absolutely settle it down, probably enough for Rizzo to not have to make a panic move. They're not what they want going into October and they won't be.
Glover's health is a bit of a concern, but if that's under control, I'm not overly concerned about those two.