That's sad.

I do understand if no one had helped him. But just for the sake of what he has contributed to his former teams, they're a lot of it but still business is business I guess.
Maybe some exemption can be made just for him to be eligible let it do alone by the management.
We can't blame that no team would sign him since his numbers aren't really valuable for them.
Looking at his stats, (
https://www.basketball-reference.com/players/s/snellto01.html), nothing much in here, just a regular player that could and anyone that is young could contribute like this, maybe even with lower salary.
For the sake of his welfare and his family but then, yeah, it's all pure business and there's no need for any compassion just to take the eligiblity of the guy.

That's a lot yes but I think that most of them are going to taxes, commissions of their agents, etc. And it's possible that he has saved a bit but then don't have managed to be financially well.
It's a common issue for many NBA players and athletes.