I have real bandaids on several of my tomato
plants and they have bounced back very well from their injuries (often from me unintentionally abusing them). Yes, you can root those branches which are called suckers, either by putting them into a glass/jar/bucket of water or planting into the ground. I tend to have better luck doing the former and have 5 clones
growing nicely with green tomatoes on them. I actually harvested the first of my Sungold OP cherry tomatoes off the clone yesterday. It's really the easiest way to propagate tomato
plants and you don't have to sacrifice precious
seed..not to mention the clone grows much faster than starting over from
seed. To give you some perspective on whether you'd have time to reap a harvest if you planted your branch to form a clone...I transplanted a rooted clone from Munchkin's cherry tomato
plant 2 weeks ago and he's got small fruit on it now..they're green and we're in Toronto, but he should have some ripe fruit from that clone before frost.
Let us know what you decide and how things go with your
plant(s).
Cheers,
Julianna