Here’s the link to a site apparently put up by the Cards Against Humanity folks detailing their side of the story: https://elonowesyou100dollars.com/

“I was surprised that there were not more objections,” from the defense team he added. “At one point, the court … objected, because there was no objection coming from the defense.”

Either they are bad lawyers or they were strategically withholding their objections in order to file the mistrial motion. I fully expect this to be brought up again in an appeal, assuming Trump loses the case.