Yes just ask a System Admin to delete it. But I have noticed that. I actually had to tele to the other side and summon the player through once because one of the systems was busy with something else and didn't have the time to delete it.
Sometimes when you use Kawarimi the log appears , but never disappeares . and were having proplems that , theres a Kawarimi Log blocking the Sound 5 inviter in the maze and it never disappears unless you reboot