Yes, you're right. But ASO had been putting pressure on Rabobank before they sacked Rassmussen, and also stated that they wouldn't have allowed Rassmussen to compete in the TDF if they had known he lied about his whereabouts. Rabobank did their best to distance themselves from him, and make it seem like their immediate reaction. ASO decided it is better to preemptively remove the maillot jaune than to have a scandal after it's been won.