Without really seeing a picture it's not possible to really know whether or not the bud has blasted. Also, we don't know where you live - so what your outside conditions are like. It could be that the orchid did not like the abrupt change in conditions i.e from nursery to shop or nursery to home, or home to outdoors.
Leave the bud on and wait and see if it shrivels off on it's own accord. It might not, and may still open. If not, don't fret - it happens to everyone, and is not unusual when a plant is moved whilst in bud.
I don't know about the second bloom - could be natural, could be a cat swiped it. There are plenty of furry orchid biters associated with this forum! Are there any signs of insects or aphids?