Welcome aboard EBPF !
Sorry about your troubles ..
There is a TSB on the hub issue ... its a warranty repair .
The small hose in the pic does not come with a clamp from the factory .
I would just trim it and put a small clamp on it.
As a preventive measure against boost or vacuum leaks its a good idea to put clamps on all hoses that don't have them , being careful to not over tighten.
Oil in the CAC tubing and intercooler is a well known issue on the 3.5 EB and solutions are available.
The below forum links discuss this at length with LOTS of reading material .
http://www.ecoboostperformanceforum.com/index.php/board,135.0.htmlThe SHO and 3.5 EB have tons of potential , dependent on how much $$$$ you can spend .