Spin 5: Malsingmaps reversed engineered KL, PRK, NPM and EPM

Rumour has it that Anthony had already resigned as a mapper at Malsingmaps well before he formed Malfreemaps and gave his source file to the remaining mappers at Malsingmaps.

Later on, when he formed Malfreemaps he decided to take the source file back.

So mappers at Malsingmaps did not reverse engineer the maps it seems. Anthony had already given his source map file to the remaining mappers at Malsingmaps.

Also refer to Spin number 2 on Map Ownership.