renegade — a person who deserts a party or cause for another.
regressive — regressing or tending to regress; retrogressive.
noun backsliding
relapse — to fall or slip back into a former state, practice, etc.: to relapse into silence.
backslide — to lapse into bad habits or vices from a state of virtue, religious faith, etc
lapse — an accidental or temporary decline or deviation from an expected or accepted condition or state; a temporary falling or slipping from a previous standard: a lapse of justice.
regression — the act of going back to a previous place or state; return or reversion.
reversion — the act of turning something the reverse way.
