Why Vox needs to spec Frost?

I would like to present my argument through examples.

Me and Vox did some 2v2's today, resulting in nothing but losses.

Let's take 5 of these fights, and analyze them, shall we?

FIGHT #1
Us VS Shaman/Warrior team.

On the surface, this should have been a very easy fight. The shaman could be nuked to hell and back before anybody knew what was going on, then the warrior could have been easily taken to pieces. What went wrong, you ask? I'll tell you.
Vox fires up his super nuke, launching a ridiculously powerful spell right into the shaman's Grounding Totem. That's right folks! So, the shaman stayed up, warrior was successfully sheeped and crowd controlled, etc. But we ended up losing because the shaman did not go down. We probably could have won, but I was OOM by the time Vox died.
RESULT:
/cast Ice Block
/sigh

FIGHT #2
Us VS Hunter/Warlock team.

The warlock was a demonology spec, with the Felguard out. That in itself attests to the general nubness of the team we were playing. Overall, we performed quite well. Rooted stuff, Counterspelled things, yatta yatta. Problem is, Vox had no way to wipe the DoTs on him, and so was still taking damage from Corruption long after the warlock was killed.
The other problem was that I had used Ice Block early in the fight to wipe Viper Sting and the Warlocks DoTs, and so (thanks to Hypothermia) was unable to Ice Block later in the encounter, and so was run OOM and killed because of one stinking Sting. Needless to say, Vox couldn't beat the hunter all on his own. He soaked up some auto-shots and dieded.
RESULT:
Death by Hypothermia

FIGHT #3
Us VS Warlock/Priest team

Priests are somewhat difficult to fight, if they're played well. This priest was played very well, and managed to keep him and the warlock up through 30k damage, despite sheeps and counterspells. Eventually the priest bit it. That left us and the warlock. Guess what the warlock does? If you guessed putting DoTs on us and waiting until we died because we couldn't do anything about it, you guessed correctly. Vox died very quickly (as usual) and I simply had no defences left. Bloody Affliction Locks and their invincibility.
RESULT:
Death by Hypothermia

FIGHT #4
Us VS Hunter/Shaman team

Beast Master hunter, and Resto Shammy. So... Vox didn't miss his nuke this time. The Totem ate an Ice Lance this time. But... well, what happened is simple, really. The Hunter popped BigRedSquishyKiller, and Vox is as squishy as they come.
So, the true question. Can I kill both a Shaman and a Hunter at the same time? The answer would normally be "Yes" considering I still had most of my CDs, and the shaman was almost dead. Sadly, one hunter pet decided I didn't deserve a fulfilling life, and the Shaman got to heal himself while I was Intimidated on the floor. Blink, Trinket, and Ice Block were all happily sitting on CD, watching me yell and scream at the monitor "COUNTERSPELL!!! C'MON!! COUNTERSPELL!! DAMMIT!!!"
RESULT:
/cast Ice Block
/sigh

FIGHT #5
Us VS Warlock/Priest team

At this point in the night, you could tell Vox was getting rather tired. See, the priest popped the end-tree discipline talent. You know the one? The one that makes them all very shiny and glowy, and makes them nigh invincible? Yeah, that one. Silly Vox spends most of his mana dumping Arcane Missiles into it. So, the warlock kills him with Uber DoTs (WTB Ice Block. Seriously)
RESULT:
/cast Ice Block
/sigh

So, from tonight's experience, I have come to the following conclusions:

1) Ice Block is an incredible tool to have, and any mage in the arena without it is seriously gimping themselves.
2) Hypothermia is the leading cause of death in Frost Mages.