Very interesting.... It shows source IP as 127.0.0.1 which in my experience means that it was a blockchain.info wallet that crated the TX.
Also it doesn't exist on blockexplorer either.
I have had this happen before; however it will eventually clean out and pay.
If it is an invalid transaction, it will not eventually confirm. SatoshiDICE may do a payout (if for some reason their transaction validation doesn't detect this as being an invalid transaction) but that payout will never confirm either.