Ok I think I wasn't clear, there is more context that is needed for that than I provided.

Wolff is a market socialist who famously advocates for "worker self-directed enterprises" as the path to socialism. So when he says "destroy the employer/employee model" he isn't really saying "dissolve the bourgeois mode of production and institute a planned economy" like most people take Marx to mean, Wolff is saying "the USSR failed because it didn't do co-operatives."