Have you got "clutch pedal leg"? This is where driving a car demands more force from the left foot than it does from the right. Many of us don't realise we are pushing asymmetrically from the left.
It could be that you are unwittingly becoming tense during the flare and locking your left foot. Without being aware of it, the nose has yawed left. If there was a diploma for this skill, I'd have a Distinction.