Everything is OK

Bylaw 6 (the one that the copper was quoting)

**6. Unacceptable behaviour **

• No person shall use any threatening, abusive, obscene or offensive language.
  
• No person shall behave in a disorderly, indecent or offensive manner.
  
• No person shall write, draw, paint or fix anything on the property of the railway.
  
• No person shall soil any part of the railway.
  
• No person shall damage or detach any property on the railway.
  
• No person shall spit.
  
• No persons shall drop litter or dump waste.
  
• No person shall molest or wilfully interfere with the comfort or convenience of any person on the railway.
  
  

I don't think he was doing any of them - unless thet try to argue 2 & 8

all the bylaws can be found here