I believe that the auto function of the speedbrakes were MEL'd.
Pence?s skidding plane had inoperable speed reducer, NTSB says | Newsday
Which means that you want to get them and the reversers out quick in a situation like this. Can be done in 1-2 seconds after touchdown. Best to make sure of a 1500' touchdown or less as well.
Curious about the autobrake setting.