Wedding ring situations can be so weird. After my BD, I took off my wedding ring and showed up at a school event without it. H got upset and said we should still be wearing our rings? So we do even though he told me he was "done with me." H also had a poor upbringing and focuses on keeping up appearances.
I am in a similar sitch as this week H is so normal. Since last Friday he has been "playing house." Like you I know something crazy must be brewing. I am trying to enjoy the respite.
Me 41, H 47, M 15 yrs, S11, S13 BD 1: 11/4/14 we work on it; really I pretzel myself BD 2: 3/31/15 H goes down to "dorm room" 8/15: H back to MBR 10/15: H back in dorm room 1/18: H files, now divorced