Lost my brakes today... wtffffff

[Kevin]

Hello all.. so today i was leaving work.. (at the malll).. i was in the parking lot.. and i drove.. made a right turn while braking.. and suddenly a hear a small pop from the front right side.. and udeenly i lose ALL my braking power.. i was like wtf!!.. i'm sure i have good brakes and pads. im not sure about my break lines. but i had one of the rear lines replaced. i checked the reservior and it is still full.. i check the lines from the abs and they are fine. and there arent any visible signs of leaks... i was messy around in the parking lot seeing if i could pump the brakes.. to get home . and it seems that if i SLAM the brakes... i get reall good brake pressure as long as i hold on reeall reall hard.. and if i try braking normally... it just goes straight to the floor and there is absolutely no brake power.... and same if i slam it.. and i dont hold on hard.. it just kind sinks to the floor too..
my car is an 87 turbo manual. right now i parked at my friends house. im planning on biking over there tomorrow to check it out. do u guys have any suggestions?