$10k is a sci-fi section value, unless we go to a scenario of global financial meltdown that would destroy all fiat currencies, dollar included. Even then, I am not sure if Bitcoin (at its current development stage) would be the currency of choice. At the moment the 'ancient barbarian relics' called gold and silver have much bigger recognition world-wide and thus better chances to be the emergency money. But the chances that such a scenario will happen are relatively low.
No - it is just a bubble scenario. Nothing unsual actually.
Pretty much on point there.
Its a similar case when manipulated events happen to make these prices rise like in 2012 mt.gox exchange. So if an exchange does shady acts in the same nature, Id see those prices.