According to this article the collision course could have been prevented. The consequences of this avoidable blunder will be more space junk in orbit. Elon's sloppiness is going to create hazards for satellites. He must assume financial responsibility for the risks to others' orbiting property.
Drifting SpaceX rocket heading for accidental collision with moonScientists and sky gazers will watch intently as rocket’s upper stage slams into lunar surface on Wednesdaywww.theguardian.com