First time I have one in bloom, so I don't know what to make of this. Is this normal dorsal behaviour for micranthum, or I'm I going to have a messed up flower soon?
It looks a tad abnormal to me, but until it fully opens it's hard to say if/how messed up it will be. As the petals and sepals expand, maybe everything will straighten up. Barring that, it may not be much of a distraction even if it's not completely normal.