It may or may not be contempt of court, but it is improper. If the judge said they cannot charge you or recover from you the legal fees from that dispute, they cannot due so--and that includes by bundling them into your maintenance fees. If the co-op disagrees and feels they are entitled to the fees (for example: if there's an agreement saying that in the event of a legal dispute, you owe them their legal fees), the proper way for them to attempt to vindicate that would be by appealling the judge's decision (which they should have done promptly; it's likely too late now), not by adding them into your maintenance. Unfortunately, if they refuse to delete the fees and keep trying to collect from you, you may find yourself back in litigation with them, this time about lawyer fees.