"TCAS RA" is the call - it says to ATC "sorry mate, all your best efforts have failed to keep us apart, my clever TCAS thingy is busy sorting things out, I'm kinda busy at the mo, when it's all over I'll let you know and then we can sort out the shambles".
Headwind - any turn towards the wind is good, vice versa for tailwind. But... wait til you've almost stopped before making the turn.
Airways - can't remember the last time I was on a centreline in europe. As soon as you get a direct routing (most of the time) you're off the centreline. A small turn will make the entry to the descent easier.
hope this helps
DH