To bear in mind means to remember and take into consideration when making a decision, but the speaker wants the listener to forget what he said.
Consider the staetement "Forget and do not take into consideration that I said great, not decent enough to be mentioned in a Dominican pride flyer.". Based on this statement, is "Bear in mind that I said great, not decent enough to be mentioned in a Dominican pride flyer." a true statement? Yes/no/unknown