[kens]

I'm not sure what is going on here, but it's not malleability, since malleability can't change the amount.

In addition, the transaction in the blockchain hasn't been modified by the malleability attack, since the script starts with 47 not 4d (i.e. regular push not modified OP_PUSHDATA2): https://blockchain.info/rawtx/a76f239a327e8b61f7c3f942d52066...

It looks to me like a floating point rounding error somewhere in the FS API changed the amount and thus the hash between the transaction that was sent to you and the transaction sent into the Bitcoin network. The difference is too small to be explained by fees.

Do you have any evidence that the first transaction ever existed at all? I'd expect it to show up as unconfirmed on blockchain.info or blockexplorer.com for a while if it ever went out to the network.