Problem: Cannot create class out of nothing using witchcraft

[DoctorCaptain]

I missed an extremely critical point. The working example with 
the single arbitrary template instantiation as a data member of 
the generated class, http://dpaste.dzfl.pl/6d618af9 , has the 
template instantiation aliases inside of main, meaning the alias 
is NOT within the scope of GrabBagT, but it is able to get all of 
the type information it needs from the alias being passed in. 
Which reaffirms to me that the problem is not about whether 
GrabBagT needs to be able to see what the alias refers to 
(clearly it can figure it out), but that once these aliases are 
wrapped up into a tuple passed into the variadic version of the 
template, it stops being able to figure it out. Either the syntax 
I'm using is wrong, there is a bug in the compiler, or for some 
reason this extremely specific scenario isn't allowed.

In any case, example code that demonstrates the principle we are 
trying to achieve as working should be able to call 
magicObject.printSelf() and show that each of its arbitrary data 
members can call their own printSelf() methods successfully, as 
with the http://dpaste.dzfl.pl/6d618af9 example, but with an 
arbitrary list of instantiated templates, instead of just the one.

Brain buster, this one.