Stem cells and if they can correct a lack of apoptosis
The answer is no.  There is no method currently known whereby we could get a stem cell to transfer its genome to a cancerous cell and thus get its apoptosis mechanism functioning again.  It's just not that easy to get a genome transfered - destroying the defective copy of the genome which is stored in the nucleus and getting a new copy of the entire genome into the same.
Remember that to transfer almost anything (except small non-polar molecules) in and out of the cell, you need highly specialized transporters (ie., ion channels, Na+/glucose pumps).  This is particularly true of large molecules like glucose and sucrose (plants). But even those molecules are extremely small compared to an entire chromosome, for which there is nothing even close to a transporter.  It would therefore be impossible to get the chromosome into the cell.
But even if you could, you have yet another hurdle: you have to get the new chromosomes into the nucleus... and that only after having destroyed the original genome in Cell 1, without making the environment in the nucleus toxic for the new genome (ie., CAD activity...)  This represents innumerable challenges, including the fact that you're going to need to alter the nuclear membrane to allow the entry of a massive macromolecule, without impeding the function of the cell...  The problems, unfortunately, go on and on.
TL;DR:  Nice idea, and would be really cool if it worked, but it has way, way, way too may complexities and insurmountable hurdles to be even remotely workable.

Sources:

Lemoine R. 2000. Sucrose transporters in plants: update on function and structure. Biomembranes 1465 (1–2): 246-262.