Okay, I'm fairly certain it would be impossible for you to send LTC to a Bitcoin address because the address shouldn't validate.
litecoin is a fork of bitcoin and because of that they share some features such as multi signature addresses. in this case the LTC devs made the mistake of using the same version number for P2SH keys which led to both BTC and LTC having multi sig addresses start with 3. they changed it later to 50 IIRC which leads to multi sig addresses in LTC to start with M.Quote
So you say you sent it to a 2 of 3 electrum Litecoin wallet? Shouldn't you have 3 keys for it then?
technically yes. but a 2 of 3 means you have 1 key in your wallet and 1 key is in that online service you use (TrustCoin?). your seed however is capable of recovering 2 keys for you, 1 which is stored in your wallet already and 1 which is not stored in your wallet nor that third party has. it is the third key.which is why OP needs his bitcoin multisig wallet Seed to recover his litecoins in a new LTC wallet.
So w/out my seed I am screwed?
to the best of my knowledge, yes.
Lit