In my view, it is still a hijacking, because it is one individual taking control of a public vehicle from another individual without that original owner's permission.
Of course, the would-be custodian is supposed to serve the owners of the shell with notice of his intentions. Most of them do that. After all, it's easy enough: every incorporation must have a resident agent, and the RA exists to accept service of process.
Sometimes, though, that's a step the person seeking custodianship skips...