Investigate kloxo log inside /usr/local/lxlabs/kloxo/log. I have nothing issue in my testing server.
These logs does not show anything. It stops right after rm -rf and trying to remove first domain.
The problem you did is overloading a database !
Removing many databases at the same time require MariaDB to get some time to clear the cache etc. while you are executing script fix-outoingips after each domain. This make many such processes running and if database is slow (because it's clearing the cache) then it make load 110 and more.
Move script-fixoutgoing to scavenge - there is no point of running it after removing domain ! It does not affect any service.