A healthy sense of skepticism is helpful in cases like this (both ways). Do you have a source to share to show how this specific instance was a prank? I wouldn't put anything past the Ukranian government now, and they could have just as easily sent the message themselves.
This specific instance might or might not have been. I'm just telling you that the pirate base stations have been operating in the Maidan area and have been used for nefarious purposes since November at least. Knowing some of the petty phreaking criminals that do stuff like this, I assumed that it's much more likely to be a prank.
