I mean the mechanics used to do it. You would need to accelerate time on the order of thousands of years in a localized region of space, causing distortion after shutting down Sol's core fusion by some sort of electromagnetic explosive of immense power.
This is just my theory, but I'm of the opinions the Slomon K'Hara that destroyed Sol are not the Sirius Slomon K'Hara (be they pre-Nomad War or led by Taurvi), but an entirely different group from a different sector of the Daam K'Vosh Empire.