Provided you don't damage anything and there are rotational alignment marks between the components (they should already be there, but check) the worst case is that you'll have to take a bucket of parts to Bintel for reassembly. Assembly of schmidt cassegrains is quite simple once taken your first one apart though I haven't personally removed the secondary from it's holder.
However, it may just be that you've gotten lost with collimation and someone familiar with the process could fix it. Trying to collimate on a star can be confusing if the scope is a really long way out of collimation. One check you can perform is to look into the front of the ota in daylight from 6 or 8 feet away - you'll see a number of circles within circles - you can get the scope roughly collimated by adjusting the collimation screws until the pattern looks symetrical (ie. circles centred within each other). The screws only need to be firm; if a screw is too tight back off the other 2 rather than tightening that one.
Good luck with it all Simon
