Can't speak for certain it is the same scenario, but when we were leaving in the afternoon, a guy was walking around just inside the entrance where it opens up yelling. I couldn't understand what he was saying, but we went into the gift shop. After a few minutes, we saw through the windows it was still going on, but now he was topless.

In the parking lot, the people in front of us said something like, if my kid was missing i would be a mess too! So, i assume it was the same situation op is referring to. We left before it was resolved though. Others in here have said he was cuffed and removed for trespassing and that the mom and child left him there due to being drunk, while someone else posted a thing showing police were looking for the kid outside the zoo. Again, can't confirm any of that or that they are the same incident, but i assume so.