We learn from Maran HaRav Ovadia Yosef Z"l, as well as R' Hamburger Shlit"a, and the rest of the non-Chassidic, non-Lurianic world that it is improper for one unlearned in sha"s and halachah to learn kabbalah. If the rabbi at a shul brings kabbalah in his dvar Torah, is it proper to leave the shul for the duration of the drash?
Thank-you to Hacham Gabriel, whose blog inspired my question.