Hmmm whats with the fear of the timing chain tensioner. It's a bit hard to understand until you take one out and see one, but it's really not much of an issue. To release the timing chain, just undo the large time chain tensioner retaining bolt thing(the big one, not the small one in the middle of it) with a pair of vice grips.
Then pull the timing chain tensioner out with a bit of wire. You can then see how it works. Find the right sized allen key to put in the centre hole, and wrap some masking tape near the bottom so that only 2mm of the hex part is showing. Then hold the timing chain tensioner and do turn it clockwise until it goes in the "locked position".
When you want to tension the timing chain again, remove the middle from the tensioner retaining bolt, put the tensioner mechanism back in the hole, screw the retainer bolt into the hole, put the allen key in through the middle hole and turn it anti-clockwise until it's in the unlocked position. Then put the centre back in.
Very easy to do :)