Weird cattleya flowers.

[Sak_ikim_lol]

I think this is an Imperial Charm "Sato". The plant is ok. It´s a free bloomer, this is I think the 5th flowering. But now one is without petals and in the other one the petal is stick to one lip side. Should I worry? I supposed that maybe was a suddenly temperatures changes...or the fungicide that I applied some weeks ago. It´s a pity because this time the flowers are bigger. I will look what happen in the next flowering.
Any comments I will appreciate them.

Thanks!!

Mario