Mr Lincoln Phillips got some confirmation for me. He said it does not appear Theo Lewis is eligible for T&T. The law still extends only to non-nationals under the age of 18 whose parents are T&T citizens. Of course, exceptions can be made, but for now it doesn't look like he can be used.
Just a side note, LP has been very helpful to me and he is currently working on a list of eligible players, but in the end its all up to the TTFF and there is only so much he can/allow to do.....