OP here with an update & our decision:
LadyTango and I decided that we would remove any reference from the secretary as our proxy from the form and type my name before printing it out. We signed it, scanned it, and emailed it (as a PDF) back to the manager.
This was a bit of a wasted effort. You cannot serve as a proxy for yourself. You ARE yourself. A proxy is, by definition, a stand-in. So your wife can be a proxy for you; your neighbor can be a proxy for you; the mailman can be a proxy for you. As long as you sign a paper authorizing them to stand in for you.
You can't stand in for yourself. So that paper has no purpose whatsoever.
A proxy is for the times when you will not physically be there.
Simply tell them that you *will* be attending, and then attend. And put the proxy through the shredder.
My DH and I sign a proxy because we jointly hold our shares, and so if one of us won't be there, the other has to sign a proxy to assign our voting right to the other person.