is there a way that I can get my coins back to my BTC wallet?
You have three choices:
1) Follow snapswap's withdrawal process. I've never withdrawn BTC from snapswap, but the usual way is that they give you a destination tag, you make a Ripple payment in BTC to their address with that destination tag and they credit your snapswap account. Then you withdraw to a BTC wallet using their web interface.
2) If you don't like snapswap's withdrawal process, exchange your snapswap BTC inside Ripple for another asset that you can more easily withdraw.
3) Make one or more direct payments to Bitcoin addresses from the Ripple client.
Okay, but as long as I have them converted as BTC into my wallet at ripple, then I should get that exact amount of BTC at some point, correct?
Maybe, maybe not. That's up to the gateway. Ripple can't force anyone to give you BTC if they haven't agreed to do so. I believe snapswap BTC can be sent over the outbound bridge at no fee, meaning you should get the exact amount out if you send to a Bitcoin address from the Ripple client.
Thanks for the helpful info, JoelKatz. I recently started using ripple as an exchange for buying and selling snapswap btc/usd. I withdraw btc over the bridge. I didn't know about the withdrawal process you outlined in 1) above.