I think the fact of the way you've found out is making it worse perhaps,
Heres one way of looking at it, he put it in the skip, I come along and then sell it its been disposed of as you said and you've got no control over me removing it from the skip, so what difference is it if he put it in the skip and then removed it
As for the broken wrist, sounds like he wants to work still, i'd either send him off on ssp or get him to do some light office work at home or something along them lines
Heres one way of looking at it, he put it in the skip, I come along and then sell it its been disposed of as you said and you've got no control over me removing it from the skip, so what difference is it if he put it in the skip and then removed it
As for the broken wrist, sounds like he wants to work still, i'd either send him off on ssp or get him to do some light office work at home or something along them lines