Even if you had the valve out of the head and tried to bend it back it would not seal. You obviously don't understand how critical valve to seat seal is. If it is off even a slight amount it will leak. That is why we lap them in when we do a valve job. Lapping shows you if the valve and seat are contacting evenly all the way around.
You know, if you don't have the basic understanding of how an engine even works, then you should leave well enough alone. Bones threw out the best offer you could ask for and now you are looking at a different head. Talk about burning bridges!!! dillonj you are not a very smart individual in my book!!