[AndriyKunitsyn]

No. People leave their computers in repair shops for good all the time.

There are other red flags in the NY Post article (like, why wouldn't they just post e-mails with DKIMs), but this part is totally believable to me.

[Jach]

Also, people routinely abuse their privileges to snoop on others, and computer repair shops copying disks and having a looksie is no exception.

On the email remark, are you aware of any mainstream news org (wikileaks doesn't count) who has posted a full raw email with DKIMs as part of their story's evidence? I'd honestly be surprised if you can show me one, double so if it's commonplace, since it's one of those things I just sort of consider nearly impossible for the media to actually do.