After reading the profile and comparing notes it really looks like SunWu has returned. He's on a new market called Abraxas to "stay under the radar" due to the last DarkNet busts. I've been dying to get some Crystal LSD so I think I'm gonna go for it.
Make sure to verify that it is the same PGP key. I'm sure the guy who claimed to have lost 200 btc to them will be happy to see them reemerge.