There is a bug in v1.2 Beta 1 where data is not being correctly loaded from save games, causing a condition that sets the cheater flag.
If you saved a game that you loaded, the cheater flag would then be saved in the save game, ruining it for the metaverse.
However, if you never have to save and reload, your game should still be submissable.
I just found out today that games with the cheater flag do not count towards your overall score, so you don't need to have them removed.
I have fixed the bug here and it will be in our next update.