A tenant vacated an apartment because he could no longer afford the rent. To ensure that the delinquent tenant made up for past arrearages, the landlord would not let him remove his personal property from the apartment. The tenant found a temporary place to stay with a friend, who wanted to help the tenant get his property back. The tenant remembered that the apartment would be vacant the upcoming weekend and that the landlord would be out of town, so he suggested that they break into the apartment and take the property then. They drove the tenant's pickup to the apartment, and the friend entered through an unlocked window. The friend then opened the door for the tenant, and the pair collected the personal property. While the tenant was getting ready to drive away, the friend returned to the apartment and carried out some of the fixtures to the apartment. At this point, police officers who had been alerted by neighbors arrived and arrested the pair.
What is the tenant's best defense to a charge of burglary?