Why shouldn't they? He's blowing it all on dope, ignoring his psyche meds, threatening the president (ok, I'll cut him slack here), and neglecting his children to where he just lost custody.
Why not allow his loved ones (wife, sister, etc.) to manage his finances until he's well? Is it all a devious plot, Rob, or are they maybe just concerned about him?
Yes, I bet they're concerned about him.
Yes, I bet they're managing, spending, enjoying his cash $$ while he's locked up, and when he comes out, he'll be poorer for their involvement.
It doesn't have to be 100% either way. His family aren't sweethearts, they seem like some golddigging leeches, that married a rock star and enabled drug use for a decade, probably knee deep in the shit as well. And he's meth'd out as well, rambling and making himself look stupid.
So maybe YES they're shady and plotting, and at the same time, YES, he's meth'd out of his head and a complete mess.
I'd bet most of the people locking him up live on the Creed royalties. $$
