Dissociation is the antagonist of desire, or perhaps it is the other way around? Dissociation is falling into witnessing but with a sense of passivity and a loss of feeling, so that the actions originate only with the other. The scene assumes a sort of hyper-reality driven by an incomprehensible power external to the self in which witnessing is born. Suddenly you are detached and helplessly watching what happens, it is a kind of horror but there is a certain accompanying satisfaction, you have discovered your own subjectivity in subjection. Desire is an integrated and embodied state, a concentration of agency but ruled by a kind of urgency which submerges witnessing. Surely the ideal would be to be fully witnessing your own desire, to be only an amalgam of the two? Hence the notion of reintegration through desire, the merging of two heterogeneous forms of satisfaction.