Buds and nearby leaves curling up - maybe dying?

I have 3 outdoor cheese plants in the uk. This morning I had a look at them and noticed that from yesterday 2 of the buds at the end of stems have lost their rigidity. They have flopped a little bit and are no longer compact as they were last night. the leaves surronding the buds have curled up anfd over the bud. I hope its not dying on me
I have got a few pictures posted here, sorry the picture is not crystal clear was taken on my phone.
I am growing outdoors in the uk using green sensation top activator at 1ml per Litre.
Yesterday was abnormally hot compared to what it usually is, i dont know if this has affected them. Also I moved the plants to a shed 12 hours a day to force flowering, they are about 4 weeks into flowering.

Get some ventillation in the shed and check the humidity in there.

Ok ill check out the humidity.. only problem is I have nowhere else to put them or a power supply in there... would bin bags do the trick to froce flowering outdoors?