S.O.B. timer... what do you think?

i went out of town for a weekend and when i came back my lights were still on...

i have them on a 12-12 starting at 6:13 pm. i got back around 2 pm and they were all on.... i look at the timer and the "off" knob had fallen or been pulled out. so my plant had at least 20 hours of light that day, if it only was one day.
i set it back the correct way and it had just 4 hours of dark before the lights came back on. it seems to be doing fine but it stopped using as much water as it used to... could it have gone back to veg and if so how long before it goes into flower again? been flowering since may 11th.

also, i know i probably should have let it get more than 4 hours rest on that day

I think I would just stay with the original routine and wait and see. It may hermie on you which isn't necessarily a bad thing. You could end up with a few seeds for your next grow.