wwxbb nft 600watt hps

Hey everyone,
This is only my second post ever, due to fear but Ive been around a while. So heres the deal. My friend been growing autos in soil for a while and recently decided to have ago at photos in nft. Im not sure of sizes e.c.t but this is what he told me....

Indoor grow x5 wwxbb
Mylar tent
600 hps
Extracter with rino carbon filter
Co2
Nft
Growden blocks
Green dream veg & bloom
Big budda
Cal mag

Although I am unsure of what these are I have researched quite a bit into the ins and outs of growing. Just always feared to do it. Im the sort of person who walks into lamp posts.

So anyhow he went away for four days and when he came home he noticed the timer had failed.(constant light)He as been flowering for around six weeks. So he switched the timer on thinking it was not like that for long. Its now a few days later and he says that stems have started to grow out of his lovely big buds.

Any idea as to whats happened? And maybe someone could give a little advise what to do. We have both looked around the net but cant find an answer to suit.
Thanks in advance.
Resident nervous wreck.

sounds like the timer was fucked a bit longer than that and they started to reveg, all you can do is let them carry on, but they will take longer.

Thanks for replying welshsmoker. Do you think this will effect the yeild? he was expecting quite a good one I think.How much extra time should he give them a few weeks maybe?