Site deletion did not delete the platform node

Problem/Motivation

An environment/site was really broken so I deleted the node.

then when I created a new environment with the same name, this happened:
PDOException: SQLSTATE[23000]: Integrity constraint violation: 1062 Duplicate entry 'platform_live_site' for key 'hosting_context.name': INSERT INTO {hosting_context} (nid, name, settings) VALUES (:db_insert_placeholder_0, :db_insert_placeholder_1, :db_insert_placeholder_2); Array ( [:db_insert_placeholder_0] => 1267 [:db_insert_placeholder_1] => platform_live_cas [:db_insert_placeholder_2] => a:0:{} ) in hosting_context_register() (line 1259 of /usr/share/devshop/src/DevShop/Control/web/sites/all/modules/contrib/hosting/hosting.module).