I'm not sure what happened, but this isn't necessarily the right place to ask.
If you think that security were using their powers incorrectly, the best port of call in the first instance would be to contact the park, providing as much detail and evidence as possible so that an investigation can occur.
However, also keep in mind that every story has at least two sides, and what you saw may not give the full picture (and it's hard to say any more given you have posted very limited details here).
Security likely wouldn't give any details to anyone who was not directly part of any incident, if one did occur.
In any case, we are simply a fan site with no connections to the security operation of the park. No one here will be able to give any further insight into what happened.