The most effective and one the effcient ways of getting your groove back is by filing a lawsuit against the defendant in your home state court alleaging that the defendent has intruded into your "groove" and now has included it as a part of his groove. Now the burden of proof rests on you and not the defendent. In case if the state court judge throws out your case you can file for appeal and ultimately to the supreme court of your home state. If your case is still thrown out you can go to the Federal Court and its decision can also be appealed. By this stage the defendent will find it less costly to give your groove back than to fight the hoard of litigation and this is how you get your groove back.