After I talk to the bandits, i give them false info and tell them that Timmy is in Rattay. I was curious to see what happens (since they say to meet up with them in Samopesh after the deed is supposedly done), so I follow them all the way to Rattay and they all get stuck in one spot and just stand there.
Update : Ok, after skipping time for 2-3 hours, they unstuck and attacked me, but i lose reputation when i attack them… Meh…