Welcome GoDawgs! I am glad to see that you have overcome your disease problem. Many people here on the forum have had to deal with the same affliction. You have had either Fusarium Wilt or Verticillian Wilt which are both soil born disease. If you would like to grow tomatoes in your soil, you can do as you have and give the soil a rest for 5-7 years and then see if you can grow there again or there are resistant varieties of tomatoes that you can grow.
Here is some information for you:
http://www.vinesgardens.org/wp-conte...-Disorders.pdf
You can also look at the "sticky threads" at the top of the "Common Garden Disease and Pests" section here at TV.