I second that you're taking the club back on a slightly outside - in path.
But it seems like a reasonably flat plane (as it should be) - only that the plane you're swinging on is crossing your target line towards left field. If you aim for a straightish draw your plane line should be down the target line.
But what I do see is clear signs of steering. You do come down towards impact with some decent accumulator #2 lag (wrist cock angle left hand), but the overtaking rate seems to be zeroed way to early, because just after impact your arms have almost the same rotary speed as the clubhead. It's a sure sign that you have wasted power and no wonder you have lost distance.
You should have at least the same amount of accumulator #2 lead half way into the follow thru as you had accumulator #2 lag on your way down. That may not be the root cause, but it usually helsp to prepare and anticipate a proper overtaking after impact in any case.
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