Regardless of the facts in this case, this screams to me that Opera is fucked, they know it, and will grab anything they can on the way down. What other conclusion could you possibly draw?
Without facts? None. But if you want some speculation: Opera's interface is consistently listed as one of the preferred features for its users (if not the preferred feature). And now a guy just gives away for free what would have been their most valuable asset (assuming they were on the right, but again, apparently we don't like facts). They would be pretty incompetent at their job if they didn't sue the guy.
http://www.newsweb.no/newsweb/search.do?messageId=326699
At the same time, they published a report on usage of their mobile browsers:
http://business.opera.com/smw/2013/03/
Record profits and revenues, and 20 million new users from February to March. Doesn't exactly look like a company in trouble to me.
But maybe you know something I don't.