Book club got political, a patron wants to meet with my director

We read Trust by Hernan Diaz. It's about a man with immense wealth bending reality with that wealth. The first 20 minutes were pretty square about about the book to start and then there were some political comments. Got through a few more questions and more politics and it kind of devolved from there. People were making connections to the book until about the last half 20 minutes (1hour long discussion). Now a patron wants to speak with my director and I'm feeling pretty stressed about it. Moderating isn't my strong suit (working in it) and while things have gotten political before, its never been this off the rails. Don't know what to do, what to feel, and I'm not sure what I'm looking for here, really.