I'm sure I advised you on this before.
Why would you use the (dubious) 30Hz method if the rear spider had not been detached? The coils would probably have been correctly aligned anyway, assuming nothing disastrous had happened to the speakers. I bet some bright spark suggested taking the dust caps out too.
You may be able to run a sharp object like a small screwdriver blade along the underside of the glued surround and release it, so it can be realigned. I always use a water based glue, so the cones can be moved around for a while and initially only bond them in three places in any case until I'm happy the alignment is OK.
It is impossible for anything digital to sound analogue, because it isn't analogue!