The RSU income has to all be reported in the US since you file a 1040. Your solution of reporting the "doubled" RSU income won't necessarily work, since that will still be included twice in income. It will not exclude the foreign income; it will merely allow you to put it on the 1116.
You probably need a "corrected" W-2 to remove the extra income.
The T4 appears to be correct, so your CDN filing should be simple, as a non-resident, using the forms for the province in which you worked.
For more clarification, we would suggest contacting CRA directly.
Thank you for choosing TurboTax.
