If you want to waste your money on an attorney, go for it. But he's going to laugh. Hard.

First, you weren't falsely imprisoned. You weren't imprisoned at all. It would be a stretch to even say you were the subject of a citizens' arrest, but that's probably the most accurate description of what happened to you. You were basically detained by a public utilities employee who stood in front of your truck and delayed your departure after you drove and behaved erratically. Any judge in any courtroom in our land would uphold that TXU employee's decision to "detain" you after you drove up on the curb alarmingly and flipped him off after he reacted. You were acting like you were either under the influence of something or desperately attempting to flee the scene of an earlier crime. Most folks with sense would have found that suspicious. You could have left, but you didn't. Had you departed, you can bet that TXU employee had your license plates anyway. The cops would have caught up with you. No matter how anyone looks at it, though, your civil rights weren't compromised nor your freedoms abridged. There's a big legal difference between detention and arrest/imprisonment.

So now let's look at probable cause, since you're not going to have a justifiable complaint of false imprisonment. The "willful detention," by the way, doesn't apply to you or the fact that you willfully stayed in place. It refers to the intent of the detainer. That is, to his willful, deliberate action in detaining you, which does seem to have occurred but which is moot.

When the cops arrived, you had the signs of red eyes, at least according to them, and you also had the two previous charges that were visible to them on your criminal record. They had the report from Mr. TXU of of a person driving and behaving erratically, possibly endangering public safety. But the cops didn't search you. They simply called in the dogs. If canine "officers" smell something suspicious, that then becomes probable cause for a justified search. A go-over by the dogs isn't a search. The intent of a drug-dog review is to establish probable cause, which, frankly, they likely had plenty of even before the canine unit was ever called (erratic driving/behavior, red eyes, previous record, etc.).

You've left out a lot of the story. Like whether or not you were under the influence, or in possession, of anything during your little adventure. Whether the canine review prompted a justified officer search of your vehicle, and whether you were subsequently cited, arrested for or charged with any misdemeanor. I gather you were not.

Let this be a lesson to you. First, don't drive crazily or flip people off. It makes them immediately suspicious. When you have DUI and paraphernalia charges on your record, you don't want to arouse further suspicion. Second, know the difference between detention (willfull or otherwise) and imprisonment. And finally, make sure you tell your friends on cannabis Web forums the full and complete story so they know how your grasping-at-straws adventures end!!