Wait!
If Metatron can force Michael to fall asleep with nothing more than a kiss, why didn’t he do so ages ago??? And how did he get Uriel to cooperate?
Maybe he doesn’t know it before.. if Sytry really have Gabriel’s memories and Metatron see it, Maybe he found this inside those memories… Maybe he know many things now just like Michael …so he just take him down … I think he promise Uriel that he won’t do anything to William or maybe makes him archangel again ??? Uriel will do anything for William tho