No. Access arrangements vary, and the door can be heavy or spring-loaded. A visible stain is not a reason to attempt an unfamiliar removal procedure.
What the observation means
Some models provide a detailed owner method; others require service. Mixing up pane orientation, spacers or coatings can affect the assembly. Online instructions for a similar-looking door may omit a crucial difference.
A useful next step
Check the exact manual and your ability to follow its safe procedure. Where access is uncertain, leave the assembly intact and describe where the stain appears. Do not loosen screws experimentally or use the oven with a pane removed.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.