This certainly is not about "luck", but rather about doing the right thing regardless of what was done in the past. It is interesting to read your initial comment considering your final recommendation. The link you provide directs "mrtoronto" to a form requesting a clearance certificate for disposition of certain property when the taxpayer is non resident. Maybe it is just me, but I wonder how does this form relate to the employment income here in question?
Also, I assume you've never been audited by CRA. If you recommendation is as easy as you propose, maybe you could expand on the implications of a possible audit. Don't you realize that if CRA audit mrtoronto's file they will realize the fact that there is a tax liability from prior years which went unreported? Do you by any chance realize what this means? In addition to having to pay all those taxes (plus interest at the prescribed rate) you need to consider the possible penalties. There is also implication for the employer for not withholding the taxes owed. The fact that CRA assessed your return does not mean that they won't reassess during the period. In fact, an assessment does not even mean that your return received a close scrutiny, and therefore everything should be fine.
It is interest to see how suddenly there is some many "experts" in the area who make all those "recommendations" without even understanding the possible issues that could arise and just oversimplify things... maybe you are right when you say "heres people working with no knowledge at what the're supposed to do at all"... this kind of issues are not day-to-day issues that you would encounter in a normal business situation, and that's why you should be more than careful when making a recommendation like you did.
That is why, as I mentioned earlier in the post, mrtoronto should seek legal advice instead of doing whatever some people are randomly recommending here and just wishing that luck is on their side.
