This is going to be one of those posts where I am very careful of the 'mind over mouth' matter .
But just firstly , whilst I go make a cuppa and attempt to mull things over and sort my thoughts into words , would you mind commenting further on this statement of yours ;
ie ; exactly what type of issues are you talking of ? Also,perhaps you could change your wording from 'many' to 'all' -unless of course dog has been raised in a bad enviroment which then leaves the blame squarely where it should be-on the human.
Many Pit Bulls have quite nice temperaments, but they do often have behavioral issues and they can be very problematic when this occurs (as can many other breeds bred for fighting or guarding such as Rotties).
Again , a statement of yours ;
Pitbulls definitely have a strong tendancy to "lock" onto their prey: there doesn't need to be some physical mechanism for this term to be appropriate.
Well actually , yes .
Otherwise you are just pandering to media hype and giving false,misleading pretense/information.
This 'lock' you speak of is nothing but sheer will.Something much admired in the breed. You speak of Lock and Lock jaw,neither correct,neither exist when we are talking of this breed.
You might not like the term lockjaw (Lockjaw is a common name for tetanus which certainly does occur in dogs) but the fact remains the combination of their powerful jaws and this aggressive habit make them extremely dangerous if they do attack.
Well again , any dog attacking makes it extremely dangerous .