“False.”
Evidently it is true Yanukovych verbally tendered his resignation to the leadership of the Ukrainian parliament, because Yanukovych had the right to challenge the parliament’s vote recognizing his resignation by going to the Constitutional Court and filing a lawsuit there. Since Yankovych never did make a legal challenge in the Constitutional Court as he was obligated to do, it must be presumed he had no supportable reason to file such a lawsuit with the Constitutional Court. So, one way or another Yanukovych chose to vacate his office as President of the Ukraine.
Also false.