Pr Newswire Rank Drop

I posted a press release on PR Newswire a few days ago and it got picked up by a bunch of local news sites. However, my ranking dropped significantly. has this happened to anyone else ?

and do you have any ideas on what to do, I'm going to email each site and ask them to take it down.

I'd wait a few weeks before asking them to take it down unless they were all exact match anchors.

Where they naked links or anchored texts?

the anchor text is our websites url