So, the bent nose pliers are for removing the cotter pin clamp. First, insert the tip of one side in to the hole in the cotter pin, then twist the pin to an angle where you can get a little leverage. Push/pull the pin out of the clamp. The 6" vince grips are for use on the clamp closest to the engine. I tightened them to about a 1/4 inch gap, maybe smaller, then Positioned the thumb screw handle against the firewall with the jaws on either side of the ears of the clamp. Using the firewall to press against I closed the pliers on to the clamp. Once closed I twisted them down to a point I could easily grab on to them. I grabbed them with a better pair of pliers, more leverage, and pulled them off. The linoleum knife is perfect for cutting the hose as the sharp edge is inside the curve, giving a great point for cutting the hose. I can't believe I didn't think of this on Saturday!! 5 stinkin' minutes to do what I wasted half the day on!
Thanks everybody for your help and suggestions! Now I am going to order the replacement hose and clamps, then go out and put my intake plenum back on. Yes, I was desparate and tried to come in from the top. Lesson learned.