You said you wanted to use the 11T sprocket as a "spacer between the hub". I understand from that that you want to place it as a the innermost sprocket on the cassette (which would not work). The other thread talks simply of omitting the smallest sprocket if the cassette "hangs off" the freehub body or you don't otherwise want it, which certainly is possible.
Back to my reply, I must not be understanding correctly your intent of a "spacer between the hub".