Gary
It's too bad you threw away the other cakes.... When my cakes turn out like that, I chop them up and put them in a large bowl and make a trifle.
I agree that the oven temp may not be what you think it is - an oven thermometer is an excellent way to verify the correct temperature.
I also agree with the suggestion to let the cake bake longer - checked in 5 minute intervals. I don't use toothpicks though, because I find that for "tall" cakes, like your Bundt pan, they don't reach the center of the cake where it might still need a bit longer baking time. I use the long skewers (like those that you would use for making kabobs) and make sure I pierce through the whole depth of the cake.
Can I send you Mr Scully's email address so you can let him know that it isn't unmanly to bake a cake?