#Merchan is effectively saying here that #Trump's position of totally denying the sexual encounter w/ #StormyDaniels opened the door for prosecution to introduce specific evidence that it did occur.
Judge also concern themselves w/being overturned on appeals, which can be embarrassing, especially in a high-stakes trial. By saying he went back & reviewed his own decision, Merchan sends a signal to appeals judges, that he took that first motion for a mistrial seriously.