No, blue nose pitbulls do not turn on their owners. With proper training and socialization, like all pitbulls, they are among the gentlest and most loyal dogs.
They are also intelligent and learn quickly, so they soon understand who their family members and friends are.
However, correctly training your blue nose pitbull is essential. To help your dog understand what behaviors are undesirable, do not reproach it. Instead, simply withhold the one thing it loves most – your positive attention and praise.