Hmmm, i dont think that they would switch an bait you now bro, they usually carry on after a contract expires an carry it into the month to month scenario like you have now.
Imho, i would suck it up like you said an pay full for a phone, and have it activated on your present account, then you own the phone outright, and are not locked into anything you do not want.
Secondly, when the wnp comes about if one of the other providers matches your plan, gives you the coverage you need an service, you can switch without penality like if resigning an getting a phone on the cheap now.
Dont do it len, buy it, own it,walk where you want to walk.
Btw, you should in for some sweet retention deals if you do resign a contract with telus.
I like thier service an coverage ALOT, phone selection is not stellar an this is thier worst fault, its too bad that this will prob cause telus the highest churn at the time when number portability comes into play, and not thier services.
Which keep me from the other providers in the first place, balancing books on errors.(Couple other famous companies did this for awhile, it eventually caught up with them lol.)
Peace an sorry for the long winder.
WR