I think this is fairly common actually. In my outpatient recovery group people took this posture often. Our counselor usually talked them through it (sometimes harshly). He considered it a sign that maybe something wasn't quite right in their recovery mindset. These were all people who were very newly sober. 30 days is extremely early in recovery.
But I was also this way in early recovery more to convince myself and reinforce that drinking was a bad thing...for me.