Yes! I imagine the situation as someone very nonchalantly shrugging and using the available sign, and their colleagues then staring at what they had wrought in awed silence. Everyone involved deserves chocolate. :-)

ETA: DW is being weird and told me my reply to your comment was no longer there... so I tried again, and the previous reply made an encore. So this is the kind of reality-warping effect this sign has! ;-)