If I could do that, I would have already done it, since my Mienfoo is shit.
Also, it's not as easy as just "re-capturing it"; for one, the Landorus's seed was not shiny, and two, Mienfoo is not a stationary pokemon like Landorus so I would have to search for another seed, for wild pokemon, that is shiny, with that spread. I could do it, but at this moment: no, I won't.