I would not give back the garage opener or key until you have all of your belongings and the financial settlement you agreed on. I'm afraid you may get the short end of the stick here.
M 16 yrs, WH62, P54 3 adult blended kids EA 11/13, BD1 6/14 PA fall 14, BD2 2/15 Piecing 2015, BD3 12/15 Separated 4/16 WH moved OW in 5/16 Divorced 6/15/17