Microburst 2002
You don't get GPWS because of flap lever but actual position of flap. Since flap is stuck ECAM asks you to put it off. otherwise you will keep getting "too low flap". So that is not the reason. This one is a real teaser. In case of slat/flap stuck at 0, I mentioned earlier that you need the lever in 1 position to get the go around mode.