Is this the only time you have plagiarized anything? Were you participating in a signature campaign when you posted that thread?

The thread in question was open for at least an hour, so I am not sure how credible the argument that "you were rushing" to lock the thread is.

I would support a temp ban + signature ban if you have no other instances of plagiarism. If you were not participating in a signature campaign at the time, I would argue for additional leanancy. This is based on your merit history (which implies your contributions to the forum).