TIFU by machine washing a cushion

My husband and I took in a stray cat and her three kittens yesterday. They were living under our house and I’ve been feeding them for weeks, trying to get them used to me. My intention is to take them to our local TNR place and have mom and babies spayed/neutered and vaccinated, and then try to find homes for them all. Yesterday we finally hit the sweet spot of socialization, and I was able to get all four of them inside in our spare room. They all got flea baths, I had them set up with food, water, plenty of toys, and a nice litter box. The babies understood the purpose of the litter box immediately, but I guess mama got a bit confused and had an accident.

We have a wicker storage bench in the spare room with a cushion that sits on top, and she unfortunately peed on it overnight, despite there being a clean litter box in the room with her. The cushion did not have any removable cover or anything, so I figured it would be okay to wash the whole thing. I was sorely mistaken. I went to check the washer about an hour ago and the cushion literally exploded.

Picture of my FU: https://imgur.com/a/9yCniMX

I scooped it all out by hand and it filled up two entire trash bags. I’m very worried that I may have ruined my washer. Cross your fingers for me 😂

TL;DR: I machine washed a cushion that should NOT have been machine washed. May have ruined our washer.