I knew Earl personally. All my personal emails have gone unanswered. I sent one through the website last week and got no answer. He moved from Colorado to California so I can't just drive up there and ask anymore.
I would suspect the company as we knew it is gone. They may still manufacture parts for HSP and other companies that they sold parts to, but I would bet they are gone. A lot of the products they sold are missing from the website too.
ETA his last login here was in 2017