armchair quarterback – someone who comfortably makes judgments from the side, without having any responsibility
end-run around – avoiding conflict or responsibility by going around the normal channels in the organization blitz – an all-out attack, a campaign that is sudden and forceful drop the ball – not fulfilling one's responsibility on a task, harming the project (and annoying other shareholders) Hail Mary – a frantic, last-minute effort to salvage a project (with low-percentage chance of succeeding)
The above expressions are explained in terms of workplace conversations. To find out how they function in American football, ask one of your coworkers to explain.