Though this -should- be solved bot side, unfortunately with inactive developers and overall staff, it is not possible at this given time. But seeing as there's active DotA staff, the next best alternative is to induct a ban into activating -arem.
That being said,
Starting Wednesday, May 7th - Any and all usage of the !mode arem command on the DotA apem bot which effectively changes the mode for the game is subject to ban by the ENT staff.
This gives the DotA community roughly 2 weeks to get familiar with this change, and inform the rest. Please do your due diligence to try and remind players in the community so that they're aware of this upcoming change.
Now for a quick faq -
Can I report someone for simply saying !mode arem even though the mode never went through?
No. The report is only valid if the mode on the DotA bot was successfully changed and the game, as a result, is arem. All participating players are subject to ban.
Why is this change being made?
The circumstance of ENT and thus DotA on ENT has changed drastically and the staff now feels, prior to various player concern, that the need for -arem on an originally -apem bot is no longer a necessary mode.
What if I voted on the mode but didn't know it was bannable?
Much like other game-specific violations, you will still face penalty but can simply appeal your case to the staff and go from there. It is important however to stay informed to prevent such situations.
What if the mode is voted on but all players support it? Can they still be subject to ban?
To prevent any 'entanglement' in context and judging from the staff side, it's simply better to outlaw it completely. This means that under no circumstance is arem to be activated by players starting May 7th.
What if my games are being made arem before May 7th? Can I still report?
No. The staff is allowing plenty of time for players to get familiar with this change and be prepared for it. If your games are being made arem and you don't support it, simply tell the players that starting on May 7th, you can get banned for it.
I will keep the thread open incase anyone has more questions.