they can do anything the court and your state s laws allow -- attach you bank account, etc. that the disability check went in there isn t a bar to that unless the judge refuses to issue the order.
In a small claims court judgment, if you don t pay, the winner of the court case would have to take you back to court for enforcement of the judgment . 85% of all small claims court winners never get the money awarded by the court. If they do enforce the judgment, then the court can attach to your property, but disability checks are exempt from attachment, levies, and garnishments.
They can more than likely hold you in contempt of court because it was court ordered based on the judgement that you pay. See if you can work out a payment arrangement. If you just ignore it, its only going to get worse and become more of a problem. Technically yes, a lien can be placed and the IRS can also withhold any refunds come tax time if you have failed to comply with a court ordered settlement.