The tomatoes should ripen regardless of the vine. I had some that the wind blew into 180 degree angle. Even though that vine dried up, the tomatoes matured.
One green one fell off the Big Beef - I packed him for a week with several bananas and ripening tomatoes in a thick paper grocery sack hoping the ethylene gas would do it - he just was not mature enough yet. He got tossed to the animals down by the trees. Hopefully he made a nice meal for one of them - either raccoons or the possum I saw back there (almost white).
Correct... when tomatoes get even a blush of red, they can be picked and ripen inside. Reduces the time for bug attacks too...