DISTRACTED BY A LATE RWY CHANGE WHILE PERFORMING A RAPID DESCENT; DC8-71 EXCEEDS 250K BELOW 10000 FEET.

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WHILE PERFORMING A HIGH SPD DSCNT; BECAUSE OF BEING KEPT ABOVE A NORMAL DSCNT PROFILE; WE WERE GIVEN AN UNPLANNED RWY ASSIGNMENT FOR LNDG UPON CONTACT WITH MSP APCH CTL. THIS NEW RWY WAS SHORT AND AS PLT MONITORING. I WORKED WITH THE ENGINEER TO CONFIRM THE AVAILABLE RWY LENGTH. I NOTICED THAT THE FO WAS IN THE DSCNT MODE ON THE AUTOPLT; ENSURING AN AUTO SLOW DOWN TO 250 KTS AT 10000 FT AND BEGAN TO SET MYSELF UP FOR THE NEW APCH. I FELT A SHARP PULL-UP ON THE ACFT AND LOOKED UP TO SEE 330 KTS AT 9000 FT. THE FO HAD GONE TO SPD MODE WHILE MY HEAD WAS DOWN AND NOT SLOWED DOWN AT 10000 FT. WE SUBSEQUENTLY SLOWED AND LANDED NORMALLY. THE APCH WAS VERY RUSHED; BEING KEPT HIGH AND THEN HAVING A RWY CHANGE TO A SHORT RWY AT THE LAST MINUTE; MAKING MY JOB AS PLT MONITORING MORE DIFFICULT. IF MY FO HAD ANNOUNCED HIS CHANGE FROM DSCNT MODE TO SPD MODE ON THE AUTOPLT; I WOULD HAVE BEEN CUED TO BE MORE OBSERVANT AT 10000 FT. STILL AS A CAPT I NEED TO ENSURE THAT THE 10000 FT/250 KTS REQUIREMENT IS MET NO MATTER THE COCKPIT CONGESTION AND RESOLVE TO BE MORE AWARE; ESPECIALLY BECAUSE OF THE EMPHASIS THIS PARTICULAR ISSUE HAS RECEIVED.