2001 Chrysler Sebring Clueless

My engine died at a stop light earlier this week, and clues suggest that it blew due to the lack of oil in it, that I failed to catch. But looking further into the problem, an engine blow doesn't seem like what happened. I tried starting the car a few times, it wouldnt go. I barely even noticed it had stopped, considering it made no noise, no sudden jerk, no smoke, nothing, I looked down and saw I wasnt idleing, and realized it had shut off. The fan was dry, the oil dipstick had a clear glaze and a very very light brown tint to it, considering there wasnt much oil in it. There was no smoke coming from my engine nor the exhaust, no liquids leaking onto the ground on the engine compartment. Everything looked perfectly fine. The mechanics said they put 4q of oil in it and tried to start it up, but it didnt work, so they were going to continue to dig into it this morning. From what I described to a mech-savy buddy of mine, he says it sounds like a seal busted, and my car seized up. What do you all think? Any input would be GREATLY appreciated!