Stand almost in the very center of Avatar. Where a brainjack person might stand but so Avatar is still facing forwards.

Shield Lob dread when it pops. You'll be in range. Pop some cooldowns for hate generation if nothing else (even Tempered Will helps here), then move back a bit so the dread isn't cleaving whoever is going to do brainjack.

If you're having to spin avatar around or flip him 180, you're overcompensating.