The tripcode the proper voting director used was "◆ZAH2qANlUo". The obstructive used the tripcode "◆ZAH2H56iUo ", is very similar to "◆ZAH2qANlUo". I think he probably deceived voters.
Summary of vote obstruction : ◆ZAH2qANlUo (proper voting director) said "I'll make vote thread at 0:05." ◆ZAH2qANlUo couldn't make vote thread, however. ◆ZAH2H56iUo (obstructive) made vote thread, instead of the director. ◆ZAH2qANlUo treated this as proper vote thread. ◆ZAH2H56iUo said "this voting is invalid !"at the end of the thread.