From the Matchstick SDK download agreement: (abridged)
4. Restrictions. You agree not to exploit
... content provided to you as a Registered Matchstick Developer, in any unauthorized way ... other than for authorized purposes. Copyright and other intellectual property laws protect ... content provided to you, and you agree to abide by and maintain all notices, license information, and restrictions contained therein. You may not decompile, reverse engineer, disassemble, attempt to derive the source code of any software or software components of the Matchstick software including the Matchstick SDK software.
"Open Source Hardware" ?
You keep using that word. I do not think it means what you think it means. — Inigo Montoya