looks like mucos to me. When that mucoid plaque comes out theres alot of stuff thats been trapped in the colon behind it. When I did the colon cleanse last year I saw some strange looking things that came out after the mucoid plaque came out. I even saw undigested supplement capsules! The psyllium bulks up ...creates almost like a gel like coating in the intestines which removes old mucus and feces that are impacted in the colon wall.
Hope that helps!
Happy New Year!