What is this part? (picture incl)

I thought I smelled the faintest whiff of burnt oil today while driving. Didn't see anything at the gas station, but once I got home I smelled it again. I popped the engine cover and after a minute I could see whisps of smoke coming from this part. It looks like a spring/flange to hold the catalytic converter in place. Now, my real question is, what is over there that could leak on this part OR what is nearby that could be producing smoke instead.

The actual spring/flange assembly is not producing smoke on its own, so what's near there that's throwing off oil?
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I can't get far enough under the car to know what I'm looking at, but there is black grease on some of the surrounding bits.

If it was flywheel grease - wouldn't it be further back? CV boots are the unknown at this point.

 

I should also mention tha I got the car back from its 30k mile engine-out service 9 days ago - so could it be related to that somehow? They checked my clutch - said it looked like new. I asked about the CVs, but was told they looked okay at that point. Probably doesn't take much to have them go bad, though. Any change looking at my clutch would cause a neighboring leak?

 

Was just under the car - I don't see anything on the underbody. If it was a CV boot, does it "sling" grease? I don't know where to look for it.

Looking at that picture closer, it looks like black goop on the hose to the upper right of the spring. I'm leaving for Dubai this week, so I'll probably have it towed from my driveway later this week. Would cracked CV boots make a noise?

 

Fire? And, its not officially a brotherhood car - its an F355.