Arthur moved back to england a few years ago and recently released a cd. He's always released stuff every 3 years or so since 1976, but you have to dig for them. He still plays live on occasion and uses 1 or 2 keyboard players and a drum machine. He made a video guest appearance on a k. shakur album about 2 years ago or so as well. He wore the original helmet from fire and started his famous shreiking at the end of that song too.
His albums of the 80's are kind of hit and miss a little bit & not as strong as his earlier material of the 70's. He gave up his royalties for "fire" to get off the track label and it's still in litigation.