Craig Stewart from The Urban Python here is Canada is the only one I know who is working with Toffees, I think this uncoming breeding season will be his first in proving the gene out(if he does) I know that in the past he has done alot of Toffee x Normal breedings just to make lots of hets. I'm sure he has mixed the Toffee with other morphs to make them hets aswell but you would have to ask him to find out.
He acquired the Toffee in 2005 and bred it for the first time in 2007 to make the hets. Now those hets would be from a Toffee x Normal breeding as far as I know. To make a Toffee from picking up a pair of those 2007 hets it might take a few years for them to get to breeding size than prove them out. I think if anyone would have done it, it would have been him and I haven't heard/seen anything yet from him. I think this 2009/2010 season will be the first season he proves one out if he does.
Now I'm not sure if the OP got the hets directly from Craig at Urban or if he bought them off someone who says they got them from Craig. Either way I don't think Craig let many of them go not to mention the $5,500/male $13,500/female price tags. which i think he sold last year. Maybe the OP got scammed and got het albinos, or maybe he really did get the Hets directly from Craig and had het albinos already and got them mixed up some how. Who knows even a Het albino x Het Toffee could have produced an Albino I mean nobody really knows the Genetics behind the Toffee yet anyways I mean the original Toffee was a CH baby that Craig got from the US that the US got from Africa, these are just ideas. But in the end to get to the bottom of this the best thing to do would be to contact Craig himself becuase nobody would know better than him and until someone talks to him everyone is just throwing out ideas/guessing.