On the day of the announcement to retake the swamps, Nathan and Arnold discussed and decided they would commence the attack after thirty days. Arnold had told him he had some prior 'issues' that required his immediate attention. Nathan wanted to know what the said issues were, Arnold had his lips sealed. He wouldn't talk about it so Nathan let it go. But now Arnold had been missing for over three days...
Nathan could be patient and understanding but the syndicate was a whole another story. And after the bombshell Arnold dropped on the people, many were thinking he might've already dropped out of the picture. Even within the syndicate, there were a few people who thought Arnold was being immature with his decision to retire early and his disappearance gave them another opportunity to talk shit about him, behind his back.