Yes, because you stiffed the guy on your rental and for six months kept him from re-renting it and because you ignored the authority of the court to appear as required, now the police can come to your house and take you in over to court as a valid body attachment.
You were very wrong in 1) stiffing the guy out of a drum rental, 2) keeping his musical instrument and doing it for six months thus stiffing him from at least one if not more other drum rentals with that drum 3) not paying what you owed, 4) not going to court and most importantly 5) not thinking "it was a big deal". That kind of arrogance you'd better leave at the door when the police pick you up and when you appear before the judge.
Past conduct is no defense to this mess you've created.
Yes, the attachment can be enforced on the street, in your house, in your car during another valid traffic stop etc....
If not done in 180 days, the defendant can request an additional body attachment then the fines and bonds can be double or triple (depending on the mood of the judge).