If a Catholic believes scripture supports a heretical position, but denies that position himself based on the Magisterium, is he a heretic?

According to the Catholic Church, if a Catholic's own interpretation of scripture leads to a conclusion regarding what scripture says that the Catholic Church holds is heretical (for ex., denying Trinitarianism), and this Catholic publicly says so, but he also publicly holds that the Catholic Church's position is correct, due to the authority of the Magisterium (so, he concludes that his own reasoning regarding scripture must be mistaken, as plain as it may seem to him), is he a heretic?