The video is nice, and I don't want to take anything away from a good job but...
I have been washing fleeces for over 30 years and some seasons I've done 15 or more, keeping each seperate.
If you have regular wahing machine (the kind where the tub fills up with water) You can do a better job with less handling thusly:
Fill the tub with
hot water and your choice of soap. More water and soap for larger or dirtier fleeces
with the washer turned to 'off' , gently press the fleece into the
hot water
Leave it for a while, several hours is not too long. Don't leave it so long that the water gets cold.
with the washer lid open, move the control to 'spin' and close the lid
(you want water to spin out but no agitation)
lift out your fleece and wipe any dirt out of the washer drum
Usually I will do it a second time with only water. A coated fleece it may not need anything more.
The fleece is almost dry as is comes out of the machine and will quickly finish spread out anywhere.
In all the years doing this I've never clogged the machine or had any problems, the only caveat is that it uses a considerable amount of water.