Can you, yes it could be rooted and reverted to veg.
Might take a while to get normal veg growth.These products might help, Dutch masters or van de swan has a revert spray that helps a plant go back to veg. A lot of times you just need veg light cycle and a push with nutes to get normal leaf growth in stead of the stretchy single blade growth that happens a lot of times. That branch is still early on flower with respect to rest of plant so still a good chance it will work, but be patient.