Broken axle?
 

So today I was rippin shit on my mazda, I was in first gear shifting to second and then for some reason the car would not move, except roll. It was in gear, but went no where. I got down to check and there were no visual fluid leaks. I checked the cv shaft boot on the drivers side and found tons of grease everywhere! So I jacked the car up and put it on stands and turned the car on. I put it into first and both tires moved. I dont understand what it could be. Please give me some words of advice!

The transmission seems okay, it goes into all gears and there are no fluid leaks.

You broke your CV joint or pulled it apart? Check you mounts also just incase.

yea theres a good chance your trans mount could have broken leading to the broken cv....because ive made 500whp and never snapped one yet (im a turbo regular 3 with a 6 speed from ms3)