To be completely honest, I don't see anything -wrong- with what they did. It was a Life RP, there's been no mention of administration so I'm going to assume there were 0 admins on, they were afk, or they just didn't care.
So long as they weren't lagging the server with the events (for instance, using vehicle explosion with short-burst relays), it's not really that big of an issue. Assuming they created the relays with VCE (Xei, I'm looking at you for an answer to this one), then really it's just a matter of someone else eventing something capable of containing them, for instance relay-teleporting them to a specific room with blast-proof walls.
On that notion, clearly they upset a lot of people. On the other hand, if there were no administrators to handle this kind of occurrence, that really doesn't lead me to believe the server was of good quality anyways.
If the issue at hand was that they were spewing tank shells out while jetting around a map while there's some kid role playing as a cop... I really don't know what to say lol, find a better server or get some actual admins. I'd ban all four of them on the spot, but drama? Not worth the time and effort.
