To break the board out of its locked up or "bricked" state due to a tight watchdog reset loop, do the following:
1) Using JLink.exe, write the following command to force the MAX32650 into backup mode: "w4 0x4000000C 0x0003F004"
2) While in backup mode, reprogram the device as usual with the reset configuration in openocd as "reset_config srst_only srst_nogate connect_assert_srst".
(solution sent in by external customer and has not been tried in-house)