I think this is likely to be the case. The rim seems to now have a sharp S-bend in it at one spot, which is too short to really be removed by adjusting the tension. It feels like the rim needs to be bent straight in that area and then relaced, but I have no idea what to use as a reference surface to get it flat before rebuilding. Probably too much arseache anyway.
You can always put a loose rim against the glass in some sliding patio doors to check if it is properly true before a build... learned that the hard way ;-)
I think this is likely to be the case. The rim seems to now have a sharp S-bend in it at one spot, which is too short to really be removed by adjusting the tension. It feels like the rim needs to be bent straight in that area and then relaced, but I have no idea what to use as a reference surface to get it flat before rebuilding. Probably too much arseache anyway.