Yes. The language used is active.--He came to himself. The Father never pushed him, never cajoled him, never threatened him. The Son came to himself.
While he was dead.
Since Jesus Himself taught this parable, you must interpret Paul's writings in comparison to this--not the other way around. Give that Titus says that grace has appeared to all men, I come to the conclusion that you are 180o wrong.
Ping to 63.
And, there is no epistle penned by Titus. The epistle of that name is Paul to Titus and nowhere does Paul claim that men have a will that is not conditioned by God. He was granted grace because, as he says, "He who had set me apart, even from my mother's womb, and called me through His grace, was please to reveal His Son in me,..." Gal.
And Paul's explanation of the Gospel of grace discloses the same thing everywhere: God accomplishes everything. It does not depend upon the man who wills (chooses) or the man who runs (acts), but upon God. Rom. For it is God at work in you to both will and to do His good pleasure. Phil.
Your conclusion is even conditioned by God. Some are granted an opportunity to see; others are not.