How do I get my EOS back: Bought it on Kraken, mistakenly sent it to ICO contract address.

A few weeks ago I bought some EOS tokens on the Kraken exchange. I had them safely stored in my Trezor.

Then a few days ago I read on steemit about the need to "register" my tokens so that I don't lose them when the EOS blockchain is created.

But in reading tutorials about registering, I was following advice as if I'd bought my tokens on the ICO, and I mistakenly sent my Kraken-bought EOS tokens to the eos.io ICO contract address.

(At the time, I was under the impression that this was what had to be done no matter where I got the tokens. No one said, "Don't do this if you got your tokens on an exchange.")

I believe that all I really had to do -- with tokens bought from an exchange -- is map my wallet address to a public EOS address, and I've done that. But this mapping to my wallet will be meaningless unless I get my tokens back into that wallet.

On the etherscan page below, the four most recent "EOSCrowdsale" transactions are me trying to reclaim my tokens using "create custom token" etc., in MyEtherWallet (and wasting ETH gas in the process).

The transaction previous to those four is the one in which I sent away my EOS tokens to the ICO contract address. (The one before that is the one where I bought the tokens on Kraken.)

https://etherscan.io/address/0x5dc50d3dd3003ac94fd2042e749d040fb4c9c2a2

You can see the same transaction in ethplorer:

https://ethplorer.io/address/0x5dc50d3dd3003ac94fd2042e749d040fb4c9c2a2

My question is: How can I reclaim my tokens from the contract address I sent them to, and get them back into my own wallet?