So far as I know, that report has not been released. Every story says (as that one did) that it will be released in due course "along with the complete autopsy report when it is made public." I expect the family has been told what the report says though.
I don't know that the family hiring of M&M law firm has anything to do with what was found per the tox report. It may just be that the official investigation has run its course and they aren't satisfied. But from what various family members have said, I don't think whatever the report says will satisfy them. I might feel the same in their position. There will be issues with toxicology given his body was in the water for so long. But if, say, the report shows he likely had a high level of alcohol in his system, that might say to family he was over-served. If the alcohol level was low, why was he booted from Luke's? And how did he get in the river if he wasn't all that drunk? If other drugs were present, where did they come from (even if they are drugs people often self-administer. Families don't always accept that.)
MOO