First thing's first: Exterminate the caster since it has the highest chance of either breaking the webs or dispelling more buffs. I think either Ragnar or Ariel should be able to charge and come back without problem. Skadi's haste was dispelled, so she can't do anything once again, so she's just going to head up top to get near William so she can pull out one of the harpoons next round. Still going to need some crowd control on the remaining bugbears. Another confusion should be able to hit five out the six remaining.