Not sure I can agree with you there Bostonshire. From the evidence we have available he showed no real anger until the last period before he was released, when his girlfriend said he was breaking up with him. By all reports he had been a 'model' prisoner. Yes he did say he was going to seek revenge, but with hundreds of prisoners being released everyday that is a nigh on impossible task to monitor. Many people say things like this, but few put them into practise like he did. Hindsight is a wonderful thing. All the agencies involved are massively overworked, a situation likely to get worse with the Tories in charge.
It would appear to be an isolated and sad case, not I feel a 'system' fault. As to the fact his kids have lost a Dad, perhaps they had lost their Dad some time before .....