https://www.rhs.org.uk/advice/profile?pid=217
http://www.veseys.com/us/en/learn/reference/vegetable/tomatoblight
"Proper sanitation measures can keep spores from infecting the next crop. At the end of the growing season all tomato refuse should be removed and discarded, composted (if the pile is hot enough to kill the spores) or tilled into the soil. Thoroughly burying the residue will keep the spores below the soil surface and away from tomatoes.
Crop rotation is another means to help reduce disease in tomato plantings. Each year plant tomatoes in a new location away from areas where tomatoes, eggplant, potatoes or peppers have grown in the past. These vegetables all have similar disease problems. A minimum rotation of three years is considered essential to help reduce populations of soil-borne fungi."
Sounds like you can reuse the soil but ideally not for 3 years. If you can till the refuse into the soil it can't be necessary to sling it.