No sex does not include pressure. Whoever told you that?
Sex under pressure is coercion and that would be non-consensual in nature, by its very definition.
You are basically saying all sex is non-consensual to a certain extent.
Which is ridiculous.
Women are also vulnerable in a sexual situation especially with 5 strong drunk young hockey player dudes going at it.
So to expect her to be assertive in that situation especially when she is likely to have been impaired, is not realistic.
Bottomline is that it is likely consent wasn't provided in an informed and enthusiastic manner and the guy did not follow the necessary steps to establish proper consent.
They ran a train on her.
Then made a video after the fact to cover their asses.
Now she may be a slut or an airhead, but that doesn't mean she should be subject to such treatment.