The VRAM partition is actually a TAR archive inside in the GodMode9 FIRM, it only gets copied to VRAM. And no, we really can't write there.
As for recovering files - that is easy in FAT, cause in FAT a file delete means that
only the first byte of the entry inside the dir is deleted. The story would be different if a file is totally wiped (= overwritten instead of 'deleted'). Regardless of what myths you may have heard, one overwrite is enough, and, even if there are some forensic methods to restore even overwritten data, these are f...ing expensive and will not be implemented outside of law enforcement (when the crime is sufficiently bad, and, no, piracy does not fall under this category).
Haven't you already asked this? It's not possible.
@Ordim3n's A9SP provides a possibiliy that handles a reboot to GodMode9, but that's a workaround rather than a proper homemenu shortcut.