Help!!!

[BKs50trimGST]

K guys, I have a 92GSX that has been running for 2 weeks.... and today I was pulling into my street and I was kind of screwing around in the snow and I decided to drift alittle bit with it. When I threw it sideways I over did it and ended up lightly hitting a snowbank and getting stuck. Well after trying to reverse and get out I just decided to dig it out. Well after it was completely dug out I realized that it wouldn't go in reverse, at all, it actually moved forward, and when I shifted into 2nd or 3rd(I did this just to check) it did the same thing, moved forward, like it was stuck in a gear or something. Then after that happened my car started idiling really high, like 4,000 rpms constantly. When my brother and i finally got it out of the snowbank I parked it, turned it off but could hear a loud bubbling noise. I popped the hood and right away determined that it was coming from the radiator/radiator hose. I could smell coolant and saw that there was some fluid coming out of the overflow can. Did I seriously f*** up my engine and tranny at the same time? Keep in my mind that the car wasn't tuned cuz I havent had time to get the car on a dyno and I've been having idle problems... either I have a boost leak or something. All help would be awesome on this. And just to clarify I hit the snowbank lighty, maybe I got water in the intake or something, because the snowbank I hit I could've easily gotten out of if I had reverse, it was all powder.