Please don't - please just let him make his attempt to stop the undead tide
Terribly sorry, you're going to have to live with what has happened and what you did or did not do. Live to do something about it, not die completely in vain so the sacrifice of all those people who served you and died was worthless. Haelyn does not want your death, he wants your willing and worthy service in life. As does Nesirie and Eloele of their priestesses.
So you screwed up? But at least you're alive and able to do something about what has transpired! Take heart from that and don't bother with the ignominy, it only lasts until you set it right!