This is a very nice pose, which seems to me at this resolution to have an amount of motion blur, which could possibly be rescued by a little sharpening. Nearly all of my images are hand-held and I find that using the highest possible shutter speed is necessary to get a really sharp image. What ISO were you using?
I love the action here, Ross...agree with Ken, would love to see more of your shooting techs to make a fair assessment.
The sharpness seems a bit lacking, and I also notice a blueish cast on the fur of the bears (easy to correct).
Is that 'smudging' along the back of the LHS bear?
I also would have liked a tad more space on top, but mostly because I'm not a fan of square crops.
I just have to add +1 to the above. Was the light low here? Potentially great colours and action/poses are exciting. I think and hope you will be able to get more out of it.