Ok, I shot this shot about 20 times last night, and I only found 1 way that I could consistently get out.
The first few times, I tried to do something extra with the cb, like drawing it above the side pocket for a cut on the 6, or shooting at the right edge of the 5 and trying to masse back into it to create an angle. I quickly found out that, when actually aiming at any part of the 5 ball, any cue elevation over a couple of degrees can produce disastrous results. I'm not sure, but it seemed like the elevation of the cue was causing the cb to bounce off of the slate slightly, then ricochet off of the bottom of the cushion, pushing it away from the rail; the result was that the cb barely even made contact with the 5.
The next thing I tried was, with my cue as level as possible, to shoot straight at the 5 and draw back. I couldn't get within an inch or so of the pocket using that method, but a more skillful player may be able to pull that one off. I also tried to aim out from the rail a little with inside english and shoot a draw shot, but I found that if I hit it hard enough to draw back above the side pocket with so little cue elevation, I couldn't get the small amount of curve I needed out of the cb to contact the correct point on the 5. Either that, or the ricochet effect was coming back due to the additional power. Regardless, to get that much draw, you have to hit substantially harder than pocket speed, which means you have to hit the sweetest of sweet spots on the 5 to get it to drop, and that's very hard to do from that position.
In the end, I had to resort to the inside-spin method, and slow my stroke down to the point where I could only get maybe one or two inches of draw. The cb was still frozen to the rail every time I shot it this way, but the bank is almost a throw-in from there anyway. I was 3 for 4 with that method, so, while I wouldn't say that I've got the nuts from there, I definitely feel that it's the best option for me.
Good luck!