What about perceiving RoD though? ........ I did percieve a substantial difference in the RoD on this flight - it felt approximately like an approach into LCY or a glide landing in a light single.
Have you thought that the feeling of a high RoD (probably caused by a perception of a nose down body angle) may have been an illusion?
Due the cost of fuel we plan to do an idle descent, now if you get a short cut this can mean the only way to get back onto the vertical profile is to use the speedbrake and increase the speed. In doing this the a/c can pitch down a little aggresively. It may well be that when the pitch angle was brough back towards level it was at a much slower rate (which would be hard to detect in the cabin without a horizon to judge it from) thus your body didn't detect it. Thus the illusion of a high RoD.