The funds collected would initially go back to DTCC, who distributed them in the first place. DTCC would then put approximately $1.3 million--or however much CRGP actually paid to fund the dividend--into an account created for CRGP. It would deduct from that any expenses it might have in connection with the reversal of the dividend, and would also pay the receiver out of it.
Then, I assume, it would pay $4 million into COR's account, and $1 million into Alpine's account. If any other clearing firm was debited in connection with the CRGP divvy, it would be made whole as well.
Presumably there'd be money left over. Technically it would belong to Calissio. But I rather doubt they'd try to claim it.