Hey it is not too bad in my opinion that it happened with a little extra time they will be fine. The plant will prob be stressed out for a little while the lower branches will take on more hormones and grow that little bit extra, when the plant has repaired itself the top will continue growing as usual or if your lucky increase in mass. Make sure you support the top with string. In my opinion it will just take a bitty longer just keep an eye on the plant and trichromes.