Is your "Agile Project Manager" driving the team to increase their velocity? Has the Agile Death March begun?
Fred Brooks warned us of these dangers nearly 25 years ago in The Mythical Man-Month.
One antidote to the PM schedule crunching technique of throwing warm bodies at the problem is to remove the impediments that are known (or just under the surface) within the structure and environment that holds the team back from performing at more efficient delivery rates. So many times the line workers (developers and testers) are well aware of these issues, and feel as if they have raised them many times and gotten little attention (mostly negative attention) from managers. A classic game (Innovation Game) to expose these impediments is Speed Boat.
Speed Boat game. See the article by Alan Dayley Velocity is Like a Helium Balloon to get a hi-res poster.