The Telus ads on Stingray were annoying initially when they occurred about every half hour. This week (2nd week Feb) they seem to be about every 15 minutes. It interrupts the pleasure of listening to the music, and I hope they are a temporary feat...
I am seeing a fix now. To get from Stingray back to regular TV channels, press Back key for a few seconds, then there is a new screen where you use left arrow to select "Exit to TV", then "OK", then type the channel number. Hope that helps everyone...
I tried the back button too and it did not work. I use Gwynne's workaround which consistently works: select Guide button, type in channel and VERY quickly hit OK twice.