If you are in Canada then it's pretty difficult. The only option would be the bank transfer.

For Canadians there are better exchanges. Virtex - cavirtex.com and the one I prefer - libertybit.com.

So, I would say buy your bitcoins back in MtGOX, open an account on one of those exchanges and transfer the BTC there. Sell them there and withdraw by direct deposit/wire/Interac and what not.