Surely he wasn't implying the DFDR was recording attitude parameters on a 5 second sampling rate.
Did he mean that the pitch & roll numbers he stated (up 31-degrees, down 45-degrees, left 46-degrees, right 105-degrees) occurred 5 seconds apart?
There are all kinds of interpretations on this but I dare say that like many board members he debriefs the DFDR chairperson and jots notes down on pieces of paper just like a reported does before calling in to the office. BTDT
I suspect that the order is correct and that the max excursions are correct and that the rough time interval of the snapshots was 5 secs. In between his spoken points there could be other cycles not as significant.
Now I'm hoping that the sampling rate is much more often but that the time base records a time stamp only at 5 sec intervals.
Hopefully somebody who has recently worked with a recorder type like that on the Q400 will chime in.