Seems soms people have the same problem as me: http://wordpress.org/support/topic/wysiwyg-wigets-share-plugin-problem?replies=3
I can't save a Widget with Sharing box unchecked - it defaults back to checked and puts icons in the Widgets.
Plus I use the sharing buttons from Jetpack and even if I uncheck "WYSIWYG widgets", they still appear.
Thank you for your time!
PS. I just made you a donation (LOCI urban solutions)