1997 Honda Odyssey - Linkage Problem?

I'm needing some advice. I've got a 97 Odyssey (automatic) that just got
out of the shop yesterday and now will not go into gear because the
shifter will not move. It was in the shop due to shuttering when the car
is in idle, especially while in gear with the air compressor running. The
shop reduced the charge in the compressor and adjusted the idle. Today it
started acting up when shifting from park to any gear. It is currently
sitting at my parents' house because I could not get it to shift out of
park. My dad suggested it was a linkage problem. Any ideas on possible
solutions? I really don't want to have it towed to the shop. My husband is
moderately useful with cars but would like to provide him with some
recommendations. Thanks in advance.

 

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The manual says you can put the key into the slot on top of the steering
column (shift lock release) to release the shifter from the PARK
position, when it won't release because the battery is dead, or the
brake pedal isn't sending a signal to the circuit. Then start it in
NEUTRAL, and use the park brake when shutting it off in NEAURAL, until
you can get it fixed again.

'Curly'