Look at the power lines
Look at the Video. Look at all the polls, power lines and congestion with business. If I was the Cop I would not have let him take off.
I think pilot's in these situation let themselves get into "FLIGHT or Fight mode". The pilot wants to get out of there, making it go away. May be economical, social (embarssment, ego), time and fear (of FAA violation) puts the pilot in a mind set to take risk (and use even less judgment than what got them there in the first place).
I know these are bad reasons to compromise safety. However every pilot is affected by outside forces which affects their decision making; no one is immune from these pressures. We are all human. This is the same thing that makes pilots push bad weather or do other stupid things. The good thing is examples like this discussed on forums may help a future pilot in the same scenario say "take it apart", instead of "Stand Back, Clear!", even it the Cop says go for it. This is not the first plane to crash trying to take-off after a forced landing.
(Joke: The late Don Adams (Agent Maxwell Smart) the Pilot, "Chief, I missed it by that much.")
If Frank could have taken off it would have been much safer with the Highway he was on. However things like the above makes it no wounder Highway Patrol SOP is to not allow takeoffs on city streets. However cases like the above Video where Law enforcement allowed a Pilot to make a bad choice, and no doubt had some explaining to do himself, shows why many cops demand you truck it out.
It's too bad for Frank, he was very close to the airport. He could have easily towed it on a flat bed with wings; oh, well nothing like taking the wings off. The only thing keeping him from the airport was a mile or two of low use 4 lane hi-way, wide off ramp and a mile of 2-lane rural road leading to the airport ramp. The biggest obstacle would have been the airports electric sliding fence, about 25 wide for cars to access the ramp area.
George