Razzaq had & off day, one of Akhtar/Gul was exposed & smoked.
I think you're too kind. Shoaib was bad with the new ball too, really not good considering it just wasn't that kind of pitch. Finally in his last over, he could not get anything right. He tried a few full tosses and then resorted to an unconvincing back-of-a-length. No bouncer. One very half-arsed slower ball. Not exposed. That's a role he should know how to do. He was just bad.
At least Razzaq seemed to have a plan. In his last over, he bowled full and wide; seemingly a reasonable response to Taylor's favourite shot, but with Razzaq only bowling very medium and not varying it, it was a poor option for the death. In truth, skimming the wide line is a difficult strategy to employ at the best of times, but a batsman with the scoring areas and skill of Taylor is difficult to handle strategically. You've got to hold your chances.
And for that sort of a bowler, having an 'off day' is exactly the same as being exposed. Ideally, Razzaq can trundle along through a quite passage, but he gets smacked around because good batsmen can simply hit him off a length. If they don't choose to do it, it's probably more the captain's savvy use of him than his sharp bowling.
But the problem this attack gave them was indeed manifold. They needed Umar Gul to provide control at the death, but he was bowling such beautiful hand grenades earlier in the game that he could have bowled all ten there instead of five. As highly rated a death bowler as he is, NZ might not have had much fun at the death if Gul was simply allowed to feast on their brains earlier in the piece. Alas, they didn't have someone to back him up in either of those roles, much less cover for him, so he could do one more effectively.
So for my money (cough), Wahab Riaz and Junaid Khan have to come in. If nothing else, they have to rotate the squad before the quarters. If they're lucky, these guys might just punch a hole in a decent team.