I have seen/heard of that OTT wedding planner before on tv but even if he is thought of as "the best in Beverly Hills, I still don't see Lisa as someone who would have to have him because of that. She seems far too sensible and I don't think she feels she needs to have what's new and trendy just to impress.
We may never know for sure, but I don't think the marriage problems were what finally drove Russell to commit suicide. I think it had more to do w/finances and possibly a connection with that business partner (?) who committed suicide the next day also. I just feel he found himself in a situation where he felt he had no way out of and rather than face what might have come to light this was his solution.
Very sad for someone to feel that way.