Even if the judge determines there is overwhelming or at least credible evidence that the defendant was coerced into the plea?
And with the additional knowledge that both the FBI and his own defense team held exculpatory information from the defendant... and the court despite orders to produce such?
Yes, because as part of the plea allocution (when the judge asks the defendant about the plea), the defendant generally says that the plea is made knowingly and voluntarily and not coerced. That’s why they usually find waiver.