Fury. Hebrew. chemah = heat, wrath, displeasure.
not in Me: i.e. not now. There was in the other song (Isaiah 5:5-7): but now, "in that day", all wrath will have gone.
briers and thorns: i.e. the internal enemies of the vineyard (as the wild beasts are the external enemies). These are now the objects of His wrath, not His vineyard.