Del, Tom's response is very valid. Please, do not repair a cracked fork unless it is done by the fork manufacturer themselves.
I'm aware of 2 people that have been injured by a "flying fork"; one was the driver, the fork flew back through the windshield of his cab and struck him in the face - he showed me the scar. The 2nd I'm told was a pedestrian and the fork hit him in the chest and threw him back (so I'm told) 20'.
On fork deflection - as Tom pointed out; this shows a fork has lost/losing its strength. Talk to a fork manufacturer and they will only allow a certain amount of fork deflection.
Again, yes Tom: forks are usually replaced by the pair.
I know they can be expensive, but sitting in the witness stand using that as an excuse, a judge probably won't buy it.