Whatever happened, whoever those guys are, there's only one fact: WP Spamshield has been, and still is, the most effective solution for fighting spam at WP sites. For comments, registration and contact forms all together. Far ahead of Akismet bundled with core WP installation. There is nothing else coming close to those results.

Removing it from the repo that way, without further guidance and for whatever reason, is not only stupid but also harming WP and a lot of users that were and still are using this plugin for protecting their sites.