Houston and the Rockets' parent group have an ownership/operator relationship that essentially gives Alexander overwhelming say in what is, and isn't, taking place in that barn. The reason that the AHL still isn't there is primarily because the Wild didn't want to pay Alexander's increased rent amount and they subsequently moved the Aeros to Des Moines as a result, for instance.
Alexander essentially has the final say, and anything and everyone involving the NHL has to go through him to use that barn for better or worse.
Les Alexander is simply the arena operator. In this capacity, he's essentially an employee of the owner of the arena (city of Houston). The AHL issue was a simple arena operation business decision, had nothing to do with nhl hockey, or Les Alexander vetoing the Aeros out of the rink over the objection of the city. The city, as the owners of the rink, are the ultimate boss, not Les Alexander. From the arena agreement:
Arena Operator
Arena operations and management shall be conducted by a qualified operator (the "Arena Operator") to be selected by the NBA Club, which may be an affiliate of the NBA Club.
The Arena will be operated in a manner substantially similar to and consistent with that of other similarly situated multipurpose sports and entertainment arenas operated by NBA or NHL clubs or their affiliates.
In the event the Arena is not operated in accordance with the standards described above, the Sports Authority will have the right, upon reasonable cause and following applicable notice and curative opportunity to require the replacement of any employees, agents or subcontractors with immediate responsibility for the operation of the Arena (but not officers of the NBA Club or its affiliates) with persons reasonably acceptable to the Sports Authority.
If the city is unhappy with Alexander as the arena operator, then Alexander is gone, simple as that. Your claims of Alexander having the final say with regards to 'anything and everyone involving the nhl' are incorrect.
The city of Houston owns the rink, Alexander is their employee. NHL decisions are ultimately made by the city of Houston, not their employee Les Alexander. There are specific provisions in the agreement regarding the nhl. Alexander is allowed to bring in an nhl team himself if he wants, but an nhl team independent of Alexander can also pay rent and play at the arena. Alexander has no veto power as you're suggesting. From the agreement:
NHL Team
The Sports Authority's approval of an NHL Team may be made subject to payment of a one time fee to the Sports Authority in exchange for an annual operating consideration from the Sports Authority on terms to be negotiated when such approval is requested. Notwithstanding the foregoing, the NBA Club will have the right to cause an NHL team affiliated with the NBA Club to play its games at the Arena. Furthermore, the Sports Authority and the City will not provide any other owners or prospective owners of an NHL Team any advantage (economic or otherwise) over the NBA Club in bringing an NHL Team to Houston.
NHL Team's Rights
The NHL Team will be entitled to play all of its preseason, regular season and post-season home games (and any awarded all-star games) in the Arena (subject to (i) dates reserved by the NBA Club for NBA related events and (ii) other dates reserved at least nine (9) months in advance), subject to the terms of this Section.
All Arena agreements (including without limitation exclusive arrangements) with vendors, suppliers, sponsors, concessionaires, advertisers, suite holders, club seat holders and other parties will remain in effect during all NHL Team events, as will all policies established by the NBA Club for the Arena regarding crowd control, maintenance, ticketing, access, building operations, broadcasting and other operational matters.
Unless the NHL Team is owned by the NBA Club or its affiliates, the City or the Sports Authority, as applicable, may charge the NHL Team an appropriate rental in connection with the NHL Team's use of the Arena.
http://www.houstonsports.org/legal-documents/