A few points...
a. the contract is dated 2nd June, so has clearly not been produced specifically for any one country
b. siting in a contract that the laws applied will be those of the country of residence of the writer of the contract (in this case UHTC, whom I assume have their head offices in California?) is normal legal procedure. Considering the number of countries being toured anything else would have been a logistical nightmare, not to mention laws differ in all the countries so the lawyers drawing up the papers would have little knowledge of the various statutes. These papers must be signing contracts written under US law daily.
c. it has been stated in the Glastonbury thread that LC appears to have issues with being distracted during his sets, and others have said how great it was that the flash photography was less evident in a field than at other gigs. So the "first song and no more, and no flashes" condition is sort of consistent with that.
d. in terms of the backstage ban one does have to consider the band and Leonard's right to relax when off stage. The paparazzi are widely seen to have killed Princess Diana and are more than a little responsible for Amy Winehouse's current state - you don't need backstage access to write a review
e. similarly, banning filming outside the venue is probably designed to prevent a "mass scrum" when Leonard emerges after the gig to return to his hotel etc... could have been MUCH better worded, though.
f. ultimately Leonard Cohen is the one putting on the show so does have the right to impose whatever restrictions he, or his management, think are appropriate on the press. I'd imagine having a photographer constantly pointing a long lens up at you from close by must be incredibly distracting.
g. "...all the photos taken, published and unpublished, were to be handed over to to the managment for their free use..." - that's not actually true. If you read Clause 3 again you'll see that the Publication has to give written consent for the photo(s) to be used. What I don't quite understand is how publicity and promotion for gigs could be seen as "non-commercial" - anybody else find that odd? Also it is unclear as to whether you have to hand over the photo(s) "promptly" regardless of whether the Publication is going to give consent - if you do I'm not really sure what the use is as they'd be no use to UHTC anyway.
h. presenting such a contract only 15 minutes before a gig seems very bad. I can see why the papers were pissed off... contracts are normally negotiable, whereas this is "sign here or don't come in"... if they knew who had been granted press passes surely the contract could have been sent at that time?

i. Clause 6 sounds like an excuse to beat up the press and/or cause damage to their equipment without recourse. Not good.
Sean