No, I think this was just incompetence.
And this guy didn't care about leaving his fingerprints all over the place (literally and figuratively) because he planned to meet his 72 virgins.
But, he chickened out.
How bad is it to be a suicide murderer and your bomb is a dud?
He bought the wrong fertilizer is why those people are alive or it would have looked just like OKC. Then the bomber would have never been found and Tea Partiers would have been blamed, God is Good.
Pray for America