There is exactly one solution to the security problem: ride a beater to any occasion which requires you to leave your bike unattended. I have lost two bikes to thieves, but both were $20 yard sale specials.
You may appreciate the facilities management's concern for your bike security, but their tactics are too paternalistic and condescending for my tastes. You have the right to secure (or not secure) your bike in any fashion you see fit. A simple verbal or posted warning would have been better than inconveniencing you to seek out someone with a key.
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"Far and away the best prize that life offers is the chance to work hard at work worth doing." --Theodore Roosevelt
Capo: 1959 Modell Campagnolo, S/N 40324; 1960 Sieger (2), S/N 42624, 42597
Carlton: 1962 Franco Suisse, S/N K7911
Peugeot: 1970 UO-8, S/N 0010468
Bianchi: 1982 Campione d'Italia, S/N 1.M9914
Schwinn: 1988 Project KOM-10, S/N F804069