No, I don't think it is the same buck. The buck in the first picture seems to have a larger body than the one pictured in the second and third picture. Besides, if it was the same buck, you would have found his shed in front of the camera somewhere close by.
I think its a different buck. Look at teh shed out buck. His rear left leg looks to have been injured. It is thicker in one spot. Its hard to see on the buck with one side but it doesnt look to have the same injury.