it'll be fine, in about a week or two i'd say..
i just did the same to my bubba kush in flower.. that sucker has some super thick stems, and when i went to super crop her, it totally snapped ... i just left it flopping where i snapped it, and she looks fine, other than being snapped in that one part.. i just mean it's still living and doing good above the snap though..
cannabis is super hardy, and will usually take a ton of abuse and do fine ime..