Originally Posted by
Pilot_Recruit
Definitely would have been the BTV. As mentioned, it applies the brakes in accordance with the preselected exit. It will delay the braking application as long as possible because even just a few knots of extra energy equals a lot more brake wear and tear (temperatures). In this case it sounds like they may have floated it a little, so BTV came on hard right after touchdown and then they released the brakes to make a different exit.
Thanks, makes sense. Interesting that it applied sufficient braking to dislodge the dentures of the paying customers, when there was another exit 2,000 ft further down.
There is usually a fairly sophisticated and 'urbane' lot in the business class cabin, but several of them clearly thought their end had come!