Removing interior door with yale lock

[Ablindside]

Hi all, I am currently renovating a friends house and in his cellar we have a locked door (yale lock) that opens towards us but no key.... Does anyone have any ideas on the best way to get it open without having to call a locksmith out? My first idea is to take the pins out the hinges but thought i would pick your brains because that will be a ball ache. Thanks for the help!

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https://fbcdn-sphotos-e-a.akamaihd.net/hphotos-ak-snc6/226353_10151192570417578_1490065792_n.jpg

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^ the hinges and lock.

 

[crank39]

Either drill the tumblers out, pick it, or 'mickey mouse' it

 

[Ablindside]

Ok, by mickey mouse it what do you mean? Also thought about using a bump key but I can't be sure the lock is a standard 5 pin jobby.

 

[crank39]

Have a look on you tube on yale lock opening although it doesn't show how to mickey mouse, i was taught that method when on a locksmiths course, if i told you how then that would be very irresponsile of me