Once the supporters accept that the entire blame lies with the club, whoever initiated this, the quicker they’ll get their heads round it all …
… no one but Southampton were involved.
I’m surprised Cleveland Police haven’t asked the trespasser to attend an interview. Filming, on private property, is quite a serious matter and the footage/data should be seized in case anything further emerges.
There are private areas in the changing rooms, massage areas, etc as well as at the golf club where ‘the spy’ changed clothes. If a children's team or women were present at either place there’s another potential offence.
The repercussions could actually cripple the club.