The reasoning for being unable to drop the quest is quite simple. People could get 4/5, cancel, wait 5m, and take it again. Turbine has been able to find ways to make the wait period much longer (as in, the next day) but then people would be mad about accidentally cancelling the quest or whatever.
Hytbold worked the same way. Just count the quests in advance to see if there are 10+ available.
R5 100 GRD Marevayave - Leader of Riddermarked For Death
R8 100 MNS Fayah/100 LM Siennah/100 HNT Dinenol/102 RK Dhurik
100 CHN Alachas/85 CPT Dinfaerien/60 BUR Dhax/35 WDN Godoric
R9 105 MNS Fayeh (alt Wilya) - Lonely Mountain Band @ Landroval