is it possible to recover overwritten files with rsync?

I made an horrible mistake, I have accidentally overwritten some php files with rsync and now I just have an old copy of those. Is there a way to recover the original files in any way? I'm on a yearly OpenVZ container and extundelete won't work.

Also do you have any idea if crissic keeps backups of the servers? Those files never changed. I read on lowendbox that they keep weekly backups while on their TOS they say they don't so I'm not sure. I opened a ticket waiting for a reply. I'd like to know if there's still a chance or if I need to start coding again!

Thank you for the support guys.

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