Throwback is same as past lives but without any positive perks about it. When it triggers for 2 hours I am<em>completely</em>under control of my past life self (memory blackout). My sadism derangement is directly opposite from behavior of the solar (and own personality overall is opposite). Sadism also gives me one dice penalty to all social rolls (and Witness of Darkness adds additional -3 penalty to charisma rolls as charisma = honesty).