A large dose of common sense required here. If the wind is 90 degrees off then turning in either direction is just going to direct the flames towards a different part of the fuselage so why waste the time turning? Any other scenario the turn might be helpful but not at the expense of an expeditious evacuation. Turning the aircraft directly into wind seems somewhat impractical unless you operate an aircraft with a tight turning circle off wide runways. More chance of going off the hard stuff before you accomplish the turn and now you've got two problems to deal with!