Why should this even be given a second thought? Whether the emergency services were required or not, it was the ATC on the line if it indeed became a much larger problem and they took the initiative of having some vehicles on standby. Of course we can expect the media will publicise it "...emergency vehicles surrounded the aircraft", but if that's what happened I'm sure everyone walked away not have to feel responsible for a major accident.
IMHO, much better to say "ah well" than "what if?".