Seeker, Soviet Army had antitank cluster bombs that worked exactly as you described: the bomb with long-focus cumulative charge rotated on the chute "scanning" for target. I don't know if these bombs were in shturmovik (Su-25) regiments, but I studied it in college. We studied many usefull devices that were never used in he Army, even in Afghanistan.
Santa, it was a "frontline request". Frontline warriors (frontoviki) were supposed to know some things better then designers. Anyway, this device never was in mass production, so, probably cluster bombs were more effective and cheaper. AFAIR USSR had only antitank cluster bombs during GPW, so this device could be a nice substitute.