So after several months, I found more players for the group so that we could finally continue their first mission (On The Run, which they had previously gotten half way through). However... things didn't go as planned.
The three returning players were in the junkyard with Loomis trying to get the disc. However, being weirdly nice for a group of Shadowrunners, they decided that taking it from him by any sort of force would not be polite. Instead, the slut of the group (of which there are two, both try to act as slutty as possible to sway people) decided to seduce Loomis. After having gratuitous amounts of sex, they now have a disposable plot character following them around.
What's more interesting is what the other two were doing in the meantime.
The first had a low lifestyle, and they decided to meet up in his apartment building to play Go Fish (while the whole Loomis thing was going on, since they weren't there). The second got upset during the game, and decided to set the deck of cards on fire. He did this by using A FLAMETHROWER INSIDE THE APARTMENT. Needless to say, the entire apartment complex burned down. Lonestar investigation determined that the fire was intentional, and that the fire came from his apartment, so now the first player (or rather the fake SIN he got the apartment under) is now wanted for arson. As a result, both players are now living together in the second player's moderate lifestyle home.
They all work together for awhile trying to decrypt the disc, but realize they can't make any progress for awhile. While the group's hacker spends some time with it, the first player (who has the paranoid quality) decides that the bartender is stalking him. He sneaks in the back of the building (completely unseen) and stabs him when no one's looking. This is, of course, neglecting the security systems in place.
He, along with the second player go back to the house, and invite a third player to join them to play cards... yet again. Lonestar tracked them there in conjunction with the stabbing of a bartender, and they had surrounded the building. Fortunately for them, the third player happened to have 49 kilos of plastic explosives set to detonate in her truck outside. She taunts the police while the other two escape, and then detonates the truck.
It produces a 21 meter radius explosion, killing the third player and all the cops, while blowing up player two's home and car. It also happened to blow up several neighboring homes. Due to how quickly it happened, they don't know who was involved. However, since they know player one was there (who is a known criminal at this point), clearly he's the main suspect for this blatant act of domestic terror.
Theoretically, if both drop all related SINs and change their appearances, they should be fine. Investigation will most likely indicate that they died in the explosion. I don't expect Lonestar is particularly careful...
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So the two new players pretty much went on a rampage, with the assistance of a returning player who wanted to die anyway. They made almost no progress, but it was so funny. I don't mind at all, as long as everyone is enjoying it... which they were. The new players should hopefully get the idea that this isn't D&D, so stuff they do has legal consequences in game.
Has any completely derailing nonsense like this ever happened in any of your games?