I have it on good authority that FFC told Olivant, confidentially, that Manolo the gardener opened the drapes.

i have a couple of questions regarding that possibility -

1) why would a gardner still be around during an inportant party that just occured?
2) would'nt a gardner being in the house, especially that area of the house raise questions with mike's body guards raise all kind of red flags?
3) wouldn't all of mike's employees know the rules of the house regarding security issues?
4) even if the garnder was pay off with any amount of cash, he would have to realize the penalty for his actions if/when he is found out? you can't spend any money if your dead.

Despite the fact that all of Manolo's scenes ended up on the cutting room floor, his role in the Trilogy critical. In another deleted interview, FFC said that Manolo was the glue that held the Trilogy together. As such, he would have had the run of the compound wihtout questioning.

It may be a rumour but I heard that it was Manolo himself who cut those scenes and deleted the crucial interview.