Regarding the apoptosis mechanisms in cells and cancer
The processes of apoptosis is not so simple, there is a lot of genes and proteins that participate in it. In cancer cells some of them mutate and not working properly. 
Lack of apoptosis is the main problem in cancer. If cell not working properly, it dies. But not in cancer.
So theoretically, yes. If we will fix the apoptosis, the cell probably will die. 
It's gene engineering direction. You need to target the cancer cell, and to change problem genes. It's really difficult processes. And every type of cancer has different mutations ...

Read this for example http://www.jeccr.com/content/30/1/87
(Journal of Experimental & Clinical Cancer Research )