Legally, probably not; effectively, yes! You need a good attorney to defend yourself against an entity like that, and as a (likely) kid fresh out of college who's hard up for cash (else why would you be singing with Unbounded/BrighterBrain/Enhance IT to begin with?) that's an attorney you can't afford. Your ass is gonna get creamed in court and you may end up paying their legal fees in addition to the original $20,000.