Johnny Manziel NEVER really wanted to play in Canada ... and might've purposely violated the terms of his contract to force his way out of the CFL -- so says Warren Moon.
"Maybe he did that on purpose," the Hall of Fame QB tells TMZ Sports ... "Because now there's other options out there."
Of course, Johnny was banned from the CFL on Wednesday after the league announced he failed to live up to the terms of his contract -- which required, among other stipulations, mandatory doctor and therapist visits.