I don’t see it as a boyish prank. I see it as being very serious. But a 17 year old facing a life sentence for burglary likely goes mad at the prospect. A relatively short term of harsh labor may have straightened him out.
The trial judge who saw the outburst wasn’t opposed to his release 11 years later.
He apparently wasn't opposed to the sentence 11 years earlier either. If Huckabee had passed him over he would have been up for parole in 2015. That would have been 26 years so throwing around the 108 year sentence is disingenuous.
He would have done far better for himself if he had just offered his condolences to the families of the slain officers and his regret that a decision he had made many years ago had let this guy go. That and then refuse to discuss it further.