Not in line with another person or object. Not with it. Having your mind in another place. Off track. Not feeling the "vibe". Loosely associated with the outside world. Not in sync.
If two people are trying to open a beer, one holding the bottle and the other with the opener. The one with opener was so discoordinated that he could not open the bottle. In his discoordinated state he failed to collaborate with the other individual to open the bottle. Thus, he is discoordenated.