If it's been solvent welded then there really is not a way that I know of to take it apart without cutting. If it's just a simple edge-joint then you can use thinner blades or router bits to make a cut with minimal waste. Still, I would only do this if it was real important.
-----
Current snakes:
0.0.1 Gonyosoma oxycephala - Java locale (green)
0.2 Gonyosoma oxycephala - Malaysian locale (green)
1.2 Gonyosoma oxycephala - Java local (green)
2.2 Gonyosoma janseni - Seleyar locale (all black)
1.2 Gonyosoma janseni - Celebes locale (Black & Tan)