Did mine in March following the "bit warm" advice, apparently, these coil-packs are much easier to remove when they're hot (on my last 1.4 TSI they were metal ones and it didn't matter). I started like 45min-1hr after shutting off the engine or so, some other surfaces where still pretty hot but all coil packs came out very easily without any boots splitting etc.
If you've put everything back and the car runs fine (no damage on the split coil-pack) I'd just re-try when hot. Seems to work for most people, without even special extraction tools, I simply pulled them out in a decisive but controllable fashion!
Also, did you mean you had issues removing the spark plug in no.1? How come? It's a 16mm socket iirc and they are not tightened too strong.