I have to agree with BillJ. I remember thinking why didnt spock radio/subspace ahead to warn starfleet. Maybe it was because Spock was emotionally compromised?
Good point.
And as I posted above, the scope of what just happened would've been beyond the belief of a lot of people. The techonology that destroyed Vulcan was from the late 24th century and it was cutting edge even for that time.
I mean, can you imagine Kirk's message to Starfleet?
"This is Captain James T. Kirk of the Enterprise. Vulcan has just been destroyed by black hole created by a Romulan ship from the 24th century. The Romulan's name is, Nero. He's heading to Earth in his mining vessel. He will use a drilling device to inject something called red matter into the Earth's core. That's how he creates the black hoe. You don't have long to react. Arm your defenses. We are in pursuit. Kirk, commanding, Enterprise, out."
Starfleet's response? "Yeah. Right. Who is this, really?"