It looks to me as if ‘petitfour’ and ‘northwinds’ are the same poster, doubtless with different IP addresses.
The posting history shows the same MO including similar posts -i.e. doing ethnic,immigration and racial moby-ing as well as similar sports thread interests and posts.
It appears as if it just “passed the baton” to it’s alternate screen name.
They really didn’t like being called out for their trollish posts either.