my dog is dumb!!

okay so one of our dogs,jaguar,a South African bumasteve(cross breed of bull dog and a rottweiler) went on a one month training,to improve his alertness,help him potty train and the rest and came back it seems dummer dan b4..our "jaguar come here" has become his "go run for your life" and he runs away wen he sees my parents.i mean what is up wit that)now there  are whispers about selling him and i cant help but be sad at the thought...jaguar is d first dog that i ever liked and let alone loved,i mean he helped get me out of  dog phobia and i feel like if they sell him it would be like selling a family member and its sooo unfair...i hope he becomes less dumb cuz our other rottweilers (Royce and Rover) are overshadowing him now he seems to be big for nothing...