Well, after getting in and talking with the service manager and a Tech at the dealership, I accomplished some stuff:
The tech informed me that he had JUST run across another LS with the same issue, and it was indeed the coils. The misfiring coils were incredibly leaking voltage and sucking it from the fuel system, causing the pressure drop. THAT was lamens terms, but they gave me the in-depth and technical answer I needed.
I also had a chat with the service manager about the combative nature of the Lincoln service advisor and how she was completely unfounded in telling me that the car is supposed to do what it was when you plant the gas, and that other people who do that whom I know are the ones they're seeing in with problems all the time. He was surprised and promised to have a chat with her.
So........
We had coils #5 and #8 replaced. I just wasn't comfortable spending $1325 to replace 7 coils and then possibly get told that the fuel pumps are shot. I don't have that kind of money with a wedding showing up. So, later that same day I picked up the car, and proceeded to rape the living p*ss out of it for a solid 1/2 hour after picking it up. No problems. cool!!!
But of course, my luck being what it is (I had my Trans Am on the dyno on Saturday and it proceeded to rip the power steering pump bolts right out of the accessory bracket, defeated me yet again), we were driving last night and I did a moderate acceleration at about 45-60 with close to full throttle, and of course, felt it hesitate and watched the tach bounce around, and yup, it proceeded to perform a lighter version of the same old symptom. Seems that if you have a couple coils replaced the older ones don't like it and decide to go immediately thereafter.
So now I'm on the hunt for 5 more coils to replace. I checked out
www.fordpartscheap.com, and my god did the prices on them rise. They're $100 over there now!!!!! Where's the hookup, and while I'm at it, what kind of plugs do you guys recommend????