Sounds like yet another "relatively" irresponsible Jones dismissal...
To be honest, I dunno if the remaining bats will be able to notch up another 59 runs to achieve a lead of 400, but by all means, it's possible. They're all capable of scoring, but they'll have to do so quickly in order to allow a decent amount of time with which to put Pakistan under any sort of serious pressure. The ploy where the opposition is given enough of a sniff of victory that it could work in England's favour may be used, but it's probably a touch too risky, what with Pakistan's long-batting line-up and inarguable attacking firepower...