First they spoke with reverence in santa-rati He is the ancient purusa, without expansions (avisesah).Or avisesah can mean that he is without any comparison, since he only existed in the beginning. This we have heard from Vyasa. Certainly (vai) Krsna is that purusa. They point at him with their forefinger when they say this. He is the one who existed before all else, before the disturbance of the gunas, during the devastation (nisi), when all the jivas (jagad-atmani) were merged (nimilitatman) in the Lord (isvare), who is the soul of prakrti (atmani). Jagad-atmani is in singular form because it represents a class. “At the time of devastation the destruction is not complete because the ignorance of the jivas has not been destroyed.” Therefore it is said at that time there is destruction of the identification of the jivas (sputa-saktisu). This is an accessory to the jivas merging.

Or another meaning of the sentence is as follows. Krsna is that ancient purusa who before the agitation of the gunas at the time of devastation, existed in his svarupa all alone (atmani avisese). He who is now performing various pastimes with his associates was at that time alone in his svarupa. He alone existed and no others. Not even Brahma existed. The rest of the verse would be the same in meaning.