Bob, a picture is worth a thousand words when attempting to describe such things!
I'd be willing to bet that sharkbite does have something that'll work. The cool thing about them is that they're compatible with PEX and copper pipe and they don't use their own proprietary pipe. They just stab on what you've got.
I'd really suggest going to a plumbing supply house that knows their fittings (not a box store with moron half-wits working the plumbing aisle) and stocks the Sharkbite fittins. Show them a sketch of what you need to do and I'll be willing to bet they've got a way to make it easy.