Flynn has all the goods on Obongo and Killary. That’s why he went to Trump Tower right after the election. Maybe his plea is to immunize him from any personal wrongdoing from his time in Obongo’s administration. Obongo fired Flynn for a reason. He’s taking Clinton down no question.
Here’s the thing, Flynn didn’t need to make a plea. He easily could have plead not guilty and take it to trial - money is not an issue. There is no way the government wants to go though discovery process. It opens a huge can of worms.
And no matter the crime they could pin on Flynn, Trump would pardon him. He’ll be pardoned for this eventually.
The whole thing is a play. The plea, the charges, the statements, the leaks about how Flynn is bankrupt and abandoned is all a set up for the next move.