Reality Check:
Both of the 737 accidents you mention (Colorado Springs and PIT), occurred before much was known of the 'hardover rudder' situation involving the 737. A/C have now been retro-fitted to help prevent the problem and crew training on such a situation.
And, there has been incidents of a hardover rudder with 737s and NO crashes.
Now, think for a minute; the rudder of a Boeing airplane slams 'full deflection' to one side, and the a/c is still flyable and even more important, the tail stays attached to the a/c. And, according to the NTSB (and Airbus), an F/O walks the rudder (side-to-side, full scale or near full scale, AA587, NY), and the tail just 'snaps off' the a/c.
Again, I ask you, just think about for a minute??? Any questions??
For what it worth,
PD