I know about doing something like mounting the disk but all those solutions works because ext2 is retro compatible with ext3 and ext4.
But that time, it won’t work : I enabled ext4 features so advanced that a kernel from the last year wouldn’t be able to read my filesystem correctly. If the software isn’t ext4 aware, it will corrupt data.
I don’t need to mount the drive if a tool would allow me to right click the file for deleting or renaming so I would be able to boot Linux again.