Posted: 27/07/2014 at 21:39
Yes, looks like classic excess feeding. Tomatoes shouldn't be fed until after the first flowers have appeared and set fruit (tiny green tomatoes appear when the yellow flower petal drops off.) Once that happens, feed them once a fortnight as directed on the tomorite bottle. Only water them when the top inch of compost goes dry. Stick to those simple rules and you'll have no trouble growing toms.
As there appears to be a tomato on that truss, you'll probably be fine now - just don't over water or over feed.