Hello again

My 3.5" lutino oscar has an effective but alarming technique when it comes to dislodging poop that is on the large and stubborn side. At first I thought he was flashing and thought the worst until I saw he was simply using the decor to knock the "clinger" off and then goes back to normal. In the 1 1/2 months I've had him I've only seen him do this 3 times and each time it was to knock a piece of poop free that was being stubborn. Is this just another of many strange things oscars can do? Or is it something I should worry about?
I netted some of the poop and it looks normal; brown textured, not stringy and no parasites visible to my eye. He is active and a pig when it comes to eating and seems to be growing fast since he was only about 2" when I got him. His color is vibrant. My water parameters are; 7.6 ph, 0 ammonia, 0 nitrite, and less than 5 ppm nitrates, 50% weekly water changes, gravel vac every other week and running with a Rena Filstar XP3 in a 55g tank. He has the tank to himself except for 2 blue mystery snails that may not stand up to his assaults for much longer lol.