Need some guidance here.

Need some guidance here.

Long story short - I was brought on to provide oversight on a PMO vendor who my client suspects is not performing. And the vendor is AWFUL. The lead project manager assigned to this project (which has a budget of more than $200M and a highly complex technical system) doesn't have even a basic understanding of how data works and doesn't seem to think that the deliverable is actually working code. The project is supposed to be managed using Agile and this PM keeps sliding back into using outdated waterfall processes because they don't actually understand how Agile works. The documentation outlining the strategy to manage the project is mostly repurposed garbage cut/pasted from the internet by the PM's secretary that contains absolutely no valuable information. We don't even have the vendor selected to build the system yet and the red flags are starting to really scare me.

Originally I was told that my job is to point out the issues. And I have gone back and asked how far I should go with this on multiple occasions. The answer is always, "You do what you need to do." But the big issue is that until the vendor replaces this guy with someone with at least a teeny understanding of software development, we're running full force towards a pretty ugly cliff. I've mentioned this and they'll agree with me, but when push comes to shove, they back the vendor in order not to make waves.

I know I have no control over this because I'm not the decision maker - I was just brought in as a quality check. But it's bothering me to the point where it's affecting my ability to be pragmatic and keep an impartial viewpoint. I feel like my frustration level is starting to boil over. It doesn't help that I have developed a visceral dislike of the vendor's project manager because they are deceitful, condescending and arrogant.

My husband says I should swallow my pride and just lay low and keep getting the nice fat paycheck while the project goes up in flames (like apparently everyone else is doing there). But I honestly don't know if I'm actually capable of keeping my mouth shut and letting this thing tank. Do I stay or do I run for the hills? Help!