ok, what sort of net access do you have presently? If its high speed, I know of a site that would have the FSM online.
Failing that, I can send pics of the FSM in the important parts. Drop me an email at my email listed here, snipped-for-privacy@Verizon.net, and I'll give ya all the info I can.
Air testing of main trans:
Across the forward end of the trans, where the VB mates to the case, there is a "rail", with ports in it. From the servo end (side with dipstick fill tube) its bolt hole, pump suction, pump pressure, bolt hole, FRONT CLUTCH APPLY, REAR CLUTCH APPLY. These are the ones that matter.
Around the accumulator, which is the piston that lost the spring when you dropped the VB out, there are two large odd shaped holes. To the pan rail side, you'll see two ports, one forward, one aft, of the accumulator. These are the Servo apply ports. These will activate the bands, front and rear. That covers all of the main trans air tests.
I'd do those checks, and reassemble the trans with good fluid and filter. Then, disconnect the battery for 5-20 minutes. This will clear the PCM and eliminate the possibility that the PCM got "confused" and failed to deal with line pressure and governor solenoids.
If none of this solves the problem, I'll go into other details. However, this would narrow it to TC or OD unit, assuming no problem with electronics.