From gamasutra.com:

The story continues, with more details.

Electronic Arts did, in fact, verify that it received a correspondence from competitors in Montreal similar to the one obtained by Gamasutra. But the company declined to provide any further details, neither to show us the correspondence nor to confirm the company or individual that sent it.
When approached [...]

From maxconsole.net:

Just a rumor so far, so take this with a grain of salt.
A former mid-level manager (of whom we do not previously know) has got in touch with us to potentially expose what is a very disturbing alleged occurrence in the games industry. On the condition of anonymity, he has revealed attempts of Montreal [...]