Disable InSync on a remote machine?

I have an Insync client installed on a machine that I can no longer access, and I see it occasionally updating files from a network drive. Is there a way to disable that client? It looks like changing my Google password isn’t enough. If I remove my Google account from Insync and re-add it, will the other client stay logged out, or will I need to take more drastic measures than that?

This might not be possiblem but you might be able to log out all the clients by going to https://myaccount.google.com/permissions and removing access for Insync and then re-authorizing the other clients that you have access to.