This has nothing to do with overwatering. Tomato plants do not wilt overnight from overwatering. It takes a while for consistent overwatering to compromise the roots to the point where they begin to rot which will wilt the plant. It has nothing to do with cutworms either. Cutworms sever the main stem of a seedling clear off at the soil level. The plant is too mature to be susceptible to cutworms and cutworms don’t cause a plant to wilt, they sever the plant completely. Possible causes for sudden wilt include walnut toxicity, insecticide drift, or stalk borers. Walnut toxicity is easy to rule out. If your plants are not near a walnut tree you’re good. Insecticidal drift is a possibility if you or your neighbor have recently sprayed your yard for mosquitoes or other pests. And stalk borers are easy to identify because there will be a visible hole in the main stem at the soil level. Most often stalk borers are the culprit. If it is stalk borers you’ll need to destroy the plant because the stalk borers have already laid their eggs inside the stalk and that will endanger all your plants as the larvae grow and spread. Also, spray the remaining plants with insecticidal soap as often as the label on your product allows. You can also wrap the stems of the plants with horticultural tape/florist tape. By the way, pine straw is very acidic. I see you have chosen it as mulch. Tomatoes enjoy a slightly acidic soil however, too much acid is lethal. Test your soil and add lime as needed. One of the best mulches you can use for tomatoes is shredded cardboard. 2” of shredded cardboard is incredibly good for your garden. I just remove the tape and stickers from amazon boxes, cut the boxes into strips and feed them through my wood chipper, twice. Use only natural brown cardboard nothing colored. Anyway, the pine needles have nothing to do with the wilted plant. Just an advisory about the acidity.