Zwilla was a scammer who pretended he made the miner hash faster by using Fourier transforms ... i.e. confuse people with fake information.
He had a run of luck on my pool then claimed that the miners were lucky due to this bullshit.

Aside: His overall luck mining on my pool was below 100%

The code in the BM miners to shut them down was something I'd asked about long ago.
It was there for their datacentres and as far as I see it didn't actually work.
They removed it anyway about a year later when it got some traction from people complaining about it but not knowing anything about coding.

However, of course, I'm certainly anti BM - they have yet again released new miners that break the licence agreement of cgminer.
bmminer is just a modified cgminer