Missed some levers in Temple of the Winds?

Solution 1:

So I went ahead and figured it out the hard way.

... if I move a lever twice. Will it become locked again?

Seems that they would in fact become locked again.

Apparently all levers must be pushed towards the front (that is, towards the wall they're next to). Which means their position is not dictated relative to the other ghost levers.

Those ghost levers (the ones called "stuck" in the OP) are actually a reflection of the other 3 levers.

Can I tell which lever I missed by looking at it?

Yes, by looking at the 4 levers you can figure out which lever you missed. From left to right the levers are:

  1. North
  2. East
  3. South
  4. West