That is, of course, the only true answer, as only God knows the answers to all of the questions of any one person’s salvation.
Either Martin Luther’s, the Pope’s, or even yours or mine. None of us knows exactly until we face Jesus at our own particular time of judgement.
But to speak to the Martin Luther question here. In the interest of “full disclosure”, I am a former “cradle Lutheran” who has long since decided that the Catholic Church is the home in which I truely belong. And yet I have always thought that there must have been some small grain of truth in Luther’s original concerns for the church. Remember that before he broke with the church he was an ordained Augustinian priest, and his original intent was not to break with Rome but to redress some issues which he believed were not correct in the church at the time.
Today individuals may point to actions by individuals within the church that may not be in line with God’s / Jesus’ teachings. A look back at recent, 10 / 15 yr history, shows us that there have been cases of priests not conforming to their vows, or else why would His Holyness, Benedict XVI have expressed his applogies for the priest sexual scandals. I am not saying that todays, priests are bad, only one good priest may point to the sins of others, and say, "hey - we need to fix this’. I think that was Luther’s ORIGINAL hope when he posted his 95 theses. There were issues at that time which needed to be addressed by the Church.
Did things go drastically down hill from there? YES! Was Luther wrong in breaking from Rome? Yes. Luther was wrong! Did Luther let his anger get the better of him? Yes!
But did he commit an unforgivable sin for wanting to reform some practices, which have since been acknowledged by the true church as not having been correct at the time?
I don’t think that at this late date, 500 years, any of us can be sure of what fate may or may not have met Luther, when he had his particular personal meeting with our Savior. I for one am not going to assume that he necessarily was damned, but neither am I going to assume he was welcomed with open arms by our Lord. I am simply saying that none of us can today judge Luther, only God can do that. And by now we can probably safely say that God has judged Fr. Martin.