I think some female astronauts do use some hair spray on the ISS, but that does not at all suggest a hoax of any sort. In the video, and some other video you can see some astronauts have some pretty stiff hair.
Anyways, I can explain most of it.
At 0:15, the astronaut had made a backflip and had likely knocked something with his feet. The other astronauts had pointed and one got up to take care of it. One of them had tried to stabilize his colleague by putting his finger in his pocket.
At 0:20, he “falls” because when the is doing the backflip he grabs the handle that his foot was previously hooked to. He then pulls himself “downward” and then upward to get into view again quickly.
At 0:40, the guy on the left had hit something with his legs and was looking to see what had happened. He reaches up very briefly after realizing nothing was damaged had done an odd pose for what I assume is comedic effect. He may have possibly felt some embarrassment for screwing up his backflip a bit.
At 1:00, he the isn’t “lunging”; his foot was momentarily caught in the handle he used to stabilize stabilize himself for the interview.
At 1:16 on the left, she probably isn’t attempting to grab anything. I realize her motions looked a bit odd but there’s not much to explain there. She simply didn’t grab anything. On the right his shirt is simply creased near his pants. There’s nothing else to it.
The rest of the video is just a bunch of claims about the movie Gravity and hair spray. Hair spray, I believe, is used on the ISS by some astronauts but to work easier. After all, wouldn’t be a little annoying to have long hair flowing everywhere for months on end? Especially since your job is extremely important and hair would be pretty distracting. Though please correct me if I’m wrong.
Also suggestions for what the lady was doing with her hands at 1:16 would be appreciated. I’m not completely sure but she probably isn’t doing anything. I mean, putting your hand up for a moment doesn’t really mean much, dontcha think?