What is not common sense about it? If you do get ice, and I mean SEVERE ice accretion that won't melt away once out of cloud, now how often does that happen in Western Europe, the you descend (or climb if you must) out of the clouds and follow ECAM status advice: MIN SPD VLS+10/G DOT
Don't read more into it! If you do, you end up in no-man's land.
You could argue that if contamination is the only worry, then why not just switch off the packs and open the crossbleed.
But Airbus won't go so far so all we've got is that Airbus prefers ice+VLS10 over messing with the crossbleed if the fire PB is pushed. The rest is test pilot territory.
And by the way, according to FCOM it doesn't matter if the squib is fired or not: if ENG 1(2) FIRE pb-sw pushed.
Last edited by PENKO; 27th Feb 2017 at 08:01.