If he can prove his life is at risk, the option of refugee status might be there, although it's slim to get through it, and I think it's mainly aimed at people who's life is in danger by their own government because of their views and whatnot.
As Thaiguy said, if the evidence is there (showing you've been paying for his apartment for however long is a good piece of proof), then there's no real reason why your plan wouldn't work. There's no real need to hire a lawyer, unless you feel more at ease using one, but you won't get any special treatment by CIC.
All the forms you need are here:
http://www.cic.gc.ca/english/information/applications/spouse.aspDownload the guide, as it is a good tool in explaining the process, and how to fill out the forms. It's relatively straight forward, hence hiring a lawyer potentially being redundant.