Arg0:causer of non-association, agent
Arg1:thing not associated
Arg2:separated from
| oddly ergative (-) | |
|---|---|
|  | |
| Arg1: | [*-3] -> the heavy water | 
| REL: | disassociate | 
| transitive (-) | |
|---|---|
|  | |
| Arg0: | [*-3] -> [*-2] -> It | 
| REL: | disassociating | 
| Arg1: | the heavy water | 
| actually from disassociate (-) | |
|---|---|
|  | |
| Arg0: | [*-1] -> The market | 
| REL: | disassociate | 
| Arg1-REC: | itself | 
| Arg2-from: | Wall Street | 
The first two usages seem to be specialized and mean something like 'fall apart'.