You can trim the fur with scissors, be sure someone is holding him still so there's no chance of scissors slipping while he tries to move.
Another good trick is to run a comb through the fur & keep the comb between the cat's skin & the scissors, trim as needed.
Is the poop solid bits or more like diarrhea?
Avoid biting when a simple growl will do
The Spirit Lives As Long As Someone Who Lives Remembers You - Navaho Saying
Vindication ~ For all those pets who became sick or lost their lives from tainted pet food