Career Corruption. It´s only feasible on the PC version of the game,cause of the faster menu swapping Basically you wanna go back and forth between career and the skaters select screen while having some cash,which goes up and down between the menus. You wanna do it fast ,but in a rhythmic way. It´s possible to do it without any cash ,but it is alot harder to corrupt that way. Other ways to make it happen and it might be more consistent is going between ;buy tricks ,buy boards or buy stats menu and the skater select screen. But it´s all luck if it works or not.