He did do a bx and called it Shadow Haze but don't think he ever released those beans formally as that was an in-process project to stabilize his MH mom and mainly for his personal use. Honestly I have no idea what beans you received. He was a bit pissed I sent some Shadow Haze beans to a friend who published a grow but that all worked out OK.I don't know either. I ordered a bunch of Rev's strains and I got an extra pack labeled Metal Haze, maybe it's a bx.
Metal Haze is a long since deceased strain from Dutch Flowers. The pure MH mom rocks but honestly I like the Iron Cindy better after a good cure.