WP Lead Plus Plugin Compromising

related to the post which has been closed:

http://wordpress.org/support/topic/wp-lead-plus-issues-after-deactivated-and-uninstalled?replies=14

there is still no solution for this issue!

i deinstalled and removed WP Lead Plus Plugin, but still get the message on every blank template or default template:

“created by WP Lead Plus – a MUST HAVE Lead Capture plugin”

i don’t want to bypass this issue, i want to get rid of this unwanted advertising and compromising.

Any help is much appreciated!