re: I cannot and will not recant anything, for to go against conscience is neither right nor safe. Here I stand, I can do no other, so help me God. Amen.
Taking this one statement of Luther’s one could make a case that he held his conscience to be the ultimate authority. But you would have to ignore what he said leading up to this statement. Martin Luther placed Scripture as authority over the opinions of men, even if those men were the pope and the rest of the hierarchy of the church. His conscience was informed by God’s revelation in His written Word. It was not simply his opinion that he was spouting.
And yet Luther altered scripture to his own liking. His erroneous conscience did take take precedence over all.