by Squidboards has put out a warning. If you follow the steps you won't be locked out of Splatoon.
Source
I really don't feel safe playing online anymore after this news. So I hope Nintendo finds a way to fix this at some point.
Squidboards wrote:If you encounter a player that has done this, you need to make sure to stay in the lobby until they leave it, and then play one more match. This should ensure the game doesn't put their hacked Octoling character into your Inkopolis Plaza. The Plaza is not programmed to handle Octolings, and so if one is placed into it, your game will crash whenever it tries to load them. This includes the title screen, which means your save file is effectively 'soft-locked' and cannot be used until either Nintendo patches this issue, or your plaza is cleared by the beginning of a Splatfest.
It is possible to back up any of your Wii U save files to a flash drive, and we'd recommend doing so if you wish to be absolutely safe.
Source
I really don't feel safe playing online anymore after this news. So I hope Nintendo finds a way to fix this at some point.
