BlackNorthernJK

hmm...the first thing I thought of when I read this post was a bad pinion bearing, or pinion that's got unwanted movement...they say a whirring noise while coasting is a tell tale sign. I'd recheck this if I were you, it's really the last thing you want going bad (well you don't want anything going bad)...its worth a check.
Did you re-use the same pinion nut? Use locktite?

kflash

Alright, I am going to fess up to my dumbness! I had let the Jeep sit and drive the daugher's car till the weekend. Today I go out with plans of pulling the wheel and checking things out. I didn't have to get very far. I rotated the tires about 2 weeks ago and yes, I must have forgot to torque that one wheel down. Three of the lug nuts could be tightened further by hand. Back to 95 ftlbs and all is well. The studs all looked ok. Wow, that could have been scary!

So, check those lugs! I am kicking myself, because I am so meticulous!

AZJeeper

Wow. Good thing nothing bad happened.

...and thanks. I think most wouldn't have fessed up to their own mistakes. Everyone can take this as a lesson to check the torque, then check again.

BlackNorthernJK

X2, glad all is well dude