Basically when you modify an orbit with a single impulse - short rocket burn, bumping into something, etc - the resulting orbit will still intersect that point

Basically when you modify an orbit with a single impulse - short rocket burn, bumping into something, etc - the resulting orbit will still intersect that point (unless you reach escape velocity). So those pieces should return to that piece of LEO, although they could still be spending large amounts of time far from there.