Actually I didn't need to answer to this topic again, but this disgusting message made me think of replying.
yeshilelma said:
I don't mean helpful people but some kids trying to teach me something even they are wrong.
Who do you think you are to call me a kid; even though you are the wrong one, not me? I'm 26 years old and maybe I'm as old as your father, be careful who you are talking to. A player with the nick "yeshilelma" calls me kid, hah... What a stupid behaviour, learn about some humanism...
And yes, I know that weakening the pokemon helps catching it easier with a little difference from what I heard from Jinji. If i were you, i would hit 1 or 2 dragon rages then throw 1 or 2 pokeballs before it uses selfdestruct, it is better. Or simply use a Gengar.
And to your question, of course it isn't a bug since a 41 level Graveler can naturally use Selfdestruct. Any other questions?