What about $2000 without going to court? They will most likely pay immediately to avoid court [landlords don't like being in court with a 'failure to repay security deposit' type case].
Another way of looking at it is whether you should punish the landlord for attempting to steal your money, with the extra $1000 being an incentive/payment for your time. I don't think there's a moral obligation to do so, but it definitely improves the world if landlords are afraid to try this tactic on others.
