It also doesn't make sense because pot hasnt been the most profitable for awhile, so why would an ass ton of miners on a multi just switch?
9hcJyBQshLZsxAuC7z2QEhdGdvaXLbXmHC
This appears to be the Potcoin address the coins were mined to. I assume the one the dev means to look in to.
Unfortunately the block explorer won't open the list of transactions
Starting with this block (the odd block) you can step through and see after a few blocks to different addresses, every single one gets mined to this address
http://potchain.aprikos.net/block/d966b233c8cef71fa650d7947bcc68ec5ba191abe3f6c1836b8c12fc5b21a9c3