You've damaged the handbrake mechansim, so the discs and/or wheel are no longer flat against the hub.
Look at this exploded view of the handbrake mechansim,
click here
The pins (item 18) which hold the shoes flat against the back plate (item 2,3) will be bent because, unless the star adjuster (item 11) is slackened first, the shoes bind against the drum as the disc/drum is pulled off. I know this because I couldn't slacken one of the adjusters once, so I pulled (hammered) the disc/drum off and that's what happened.
You then need to re-***emble the entire handbrake mechanism with a new pin, to make sure that the shoes are flat against the back plate.
As already mentioned,
here is the way to change the disc/drum on the Tourer. The star adjuster is in pictures 6,7,8.
It is imperative that the shoes are flat against the back plate and that all the springs and pins are holding the mechanism loosely together, while the disc/drum is put back. If this was not the case, then the disc/drum would not go flat against the lip of the hub. Now you will have run-out, which is not the same as warp.
Run-out means that the plane of the disc is not orthogonal to the axis of rotation. This will mean that the main caliper will grab the disc as is rotates, and/or the wheel will have run-out as well. Either of this will give a feeling of wobble. I have to be honest and say that although the rear disc/drum and handbrake on the Tourer is an absolute pain in the neck, the consequences of a bodged job should be obvious while the bodge is in progress.
In order of preference, I suggest you either take up the offer of Jon_G, or go to HH (Holdcroft Honda) in Stoke, or bring it to me in Loughborough