It is certainly possible, we think.
(You know, you and I argue a lot on /tg/, but I like this)
Raynor waits for Mengsk to pause for breath, which takes perhaps a full minute, as he is ranting so fervently that he sometimes continues to rant while inhaling. When the opportunity finally arrives, he opens his mouth.
"You know, Arcturus, I don't like where this is headed. I signed up to fight the Confederacy, not the Protectorate. They mighta left us high and dry, but it was you got us there in the first place."
There is a moment of silence, as full of potential danger as the moment before the Big Bang itself, before Mengsk turns the full force of his rage on Raynor. Several minutes of diatribe later, Kerrigan, the Protectorate, Raynor, Raynor's mother, Confederate trickery, Kerrigan's mother, and Fate Itself have been blamed for the ineffectiveness of the fleet.
We muster every ounce of Raynor's not inconsiderable righteous disgust and throw it at Mengsk.
"You can say whatever you want, man. I aint the one who hired her. I aint the one who pinned all my hopes on the Protectorate. I aint the one who got us into this mess, but I'm lookin' at him."
"Get offa my ship, before I have you shot."
"Oh, you bet. I'm gone."
With that, we take him. We consider which forces would be believable to take with him, and send them toward the Protectorate.