Perhaps you're right, but the ones I heard were at least 6 months old back in January, so they're older than that. Frankly, it's similar to my experience with older HD650s, dark to the point of being drab. I just can't call that natural, "real life" certainly doesn't sound like that when I walk around every day.
I heard them for an extended test on an all Cary setup; CD 303T, Xciter DAC, and HH-1. Not the best chain, not even for Cary, but the TH900s were quite impressive. MuppetFace, the person who started the thread you linked, has owned them for some time now and she agrees, they're quite special and hold a unique place in the top tier.
I have never heard a veiled pair of LCD-3s but based on other's descriptions, sounds like that pair had similar issues. But trust me, they can be so much more. I did own the Xciter DAC for a while and really loved it. The only 2 issues I had with that DAC was that there were no balanced outputs and with USB from my PC, there was always a low level hum. Thankfully my W4S DAC-2 fixed both. The problem I have with the TH900s is that (like the D7000s) act as poor closed headphones with regards to isolation and noise leakage. Otherwise I'd be more interested in them.