My pokies do that sometimes too, and if I forget they are there, a day or so later the ball of remains is starting to mold but it's hanging away from everything else. So I just take tweezers and pull it out. It’s almost like they know the remains are going to spoil and do what they can to keep it away from them.
I agree with talkenlate, I have seen some of my pokies hang their remains of crix by a thread alongside their hide. They are just moving the remains out of the way. I have a young avic I recently got who does the same thing. Im sure its a pretty common behavior.