Ulrich is pinned under a tree. In particular, his legs are crushed, and he knows that he cannot move.  According to the text, his feet would have been broken too, but his heavy boots saved him. His arms are also tangled in the branches. There is no way that he can extricate himself.

Beside him is Georg Znaeym. He is pinned down as well. The text does not situate or describe how he is pinned down, but he is. There is another detail. There is blood on his face and it is obscuring his vision.

So, both men are not in good condition.  They probably have a few broken bones, and they are alone in the woods in the midst of the harsh elements. If no one finds them, they will die. That said they have enough energy and hatred left to despise each other.  So, we can say that at least they have their mental abilities in tact. 

Here is how Saki describes the situation:

Ulrich von Gradwitz found himself stretched on the ground, one arm numb beneath him and the other held almost as helplessly in a tight tangle of forked branches, while both legs were pinned beneath the fallen mass. His heavy shooting boots had saved his feet from being crushed to pieces, but if his fractures were not as serious as they might have been, at least it was evident that he could not move from his present position till someone came to release him.

At his side, so near that under ordinary circumstances he could almost have touched him, lay Georg Znaeym, alive and struggling, but obviously as helplessly pinioned down as himself.