Actually this is not a problem with WP Socializer at all.. WP Socializer's work is just to insert the buttons for a page. But the wrong text is due to facebook's wrong content indexing. WPSR sends the page URL to facebook using the button and facebook reads the page for content and the image. Did you notice why you got a image when there is no image in your page ?? It is only due to facebook's scanning.
The other reason is your theme is not SEO enhanced. SEO enhanced themes will work good.
Also try removing your site's cache and check again for the issue.
I spent hours on this problem but it was in vain. If it is a issue related with WPSR it will be corrected immediately.
I recommend you to read this article Facebook showing wrong description and image