Some non-standard transactions can be pushed to network with
// https://blockchain.info/pushtx Relayed my non-standard tx's
// https://coinb.in/send-raw-transaction.html Didn't tried(have you?) but I will for sure try it.
// http://webbtc.com/relay_tx Didn't relayed them.
// http://eligius.st/~wizkid057/newstats/pushtxn.php (does not work right now) Well worked in past hope they will fix it.
// http://btc.blockr.io/tx/push Didn't relayed them.