Posted By:
Steve DawsonTomB...
You are correct that it is possible for it to be a diving pose. The main sticking point with that though, is that if you look at Dunn's face, he's seemingly way too relaxed to be in the middle of a dive. The picture above Dunn in your post reflects this...that player is all tensed up waiting for impact with the ground, as I would think all players would be.
Edited to add:
Also, looking at the visible part of each player's pants...The player above Dunn: his pants are parallel to the ground. Dunn's pants however, are not parallel; they appear to start into a roughly 45 degree angle toward the ground.
Based on this, I really don't believe that the photo is of Dunn in a dive. I suppose we'll probably never know until and unless the original photo surfaces.
Steve