Sounds like it fried the forward clutch pack which would do as say and degrade your gear options leaving only reverse.

The first thing that coems to mind is, "Was it out of fluid and how did you check it?"
How it could have no symptoms before hand is beyond me. Does this car have multiply drivers? How many miles are on it? Has it EVER needed trans fluid added?
This car does have an electronic valve body; are there any codes thrown? Have you checked all the fuses, (under dash and hood). Has it ever been crashed bad in the left front or had any work done that someone might have monkey'd with the wires to trans?
Check the TRANSMISSION dipstick with the engine on and idling for at least 5min and give it sniff the first time you pull it to wipe it. Provide us color and smell of the fluid.
Off hand it doesn't look good tho.
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95 Cam, V6 1MZ, Auto A541E, LE >245,000 miles!