My question involves landlord-tenant law in the State of: Virginia

I rented a house back in 2010. Midway during the first year my fiance and i broke up and he moved out and left without paying. I immediately went to my landlord and told him of the situation. He was very kind and asked if I wanted to move as we were behind in rent about 2 months. I told him that I would come up with the money however it would take some time. He agreed however he said he would have to file for a writ of possession with the court to protect himself just incase I couldn't come up with it. I understood. We went to court and he received the writ and I was able to pay. My rent is $1,495.00 each month however once I started working I started making payments of 400.00 per week to catch up. I have paid him 400.00 a week since 2010 and am clearly far far ahead as some months have 5 weeks so on a 4 week month I overpayed by 105.00 and on a 5 week I overpay by 505.00. My question is I just found out that my company is closing and received a letter from HR regarding it. I would like to move back to California where I am from and able to work. I am not at the end of my lease as it automatically renews each year without notice. If I give him my notice to vacate or ask to stay on for the amount of months that I have "pre-paid" , my question is because he received a writ of posession in the past can he just call the sherrif to have me evicted? The writ was issued in 2010 and since I have payed in full and beyond to be prepaid at this point. I am concerned as to how this works and can he call the writ in at anytime?