This would affect your Google Analytics data if you regularly use the Page Title dimension when reporting. I would recommend making the necessary changes and reporting using the Page dimension (URL). This way, when you optimize your page title, the URL will remain the same and not be split in your report.

The most likely explanation of why your page's title was changed is because it doesn't mention your company/website at all. Google may have thought that the title was misleading and may cause searchers to think they are visiting a website that is official endorsed by Sony. Try adding some branding to the end of your title tags like Google did for you in the example. Something like "- Tape and Media" or " - TapeandMedia.com" to avoid that kind of confusion.

Referral spam is getting out of control lately for all my clients' sites. I really hope Google can do something about it soon.