This user deserves a permaban.
I have long thought that users like this have nothing to look for in the forum, but my opinion is worth almost nothing. If someone has been terrorizing the forum for months and one excuse is enough to undo it all, do you think offering a service that could be used to plagiarize will mean perma-ban? I may be wrong and the decision has not yet been made, but the matter was quickly swept under the rug with another apology and deletion of the content in question.
Plagiarism is undoubtedly much worse for the forum, such cases are not called into question when it comes to perma-ban, but is there a case when someone got a perma-ban because he/she offered services that could help create plagiarized content?
By this logic, he was forgiven for another mistake, the content in question may have been deleted by the same global mod who merit his sincerely apologize.
There is one saying that could apply here : "Fool me once, shame on you; fool me twice, shame on me"