I've done worse. Did a transmission on a farm tractor one spring. Wanted it bad, so two of us were working on it over-time.
About had it buttoned up that night, so I told him to go home and I would finish.
Had to refill transmission thru the cab. I poured in 15 gallons. Got out and had all of it on the floor. He had not installed the drain
plug. Talk about a mess.