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A 401(k) is not required to permit in-service withdrawals prior to age 65 or the attainment of normal retirement age if earlier. A 401(k) plan may permit in-service withdrawals of elective deferrals at age 59 1/2 but is not required to do so. Whether you can take a distribution prior to retirement age will be explained in the Summary Plan Description (SPD). The company should have already provided you with a copy of this document. You also have the right to obtain a copy of the entire plan document. The company must provide you with a copy of this document within 30 days of your written request or they can be fined.
So if the plan does not permit in-service withdrawals at age 59 1/2, you will not be able to withdraw the entire amount and roll it over to another plan unless you terminate employment.
Treasury Reg 1.401(a)-14(a) - http://edocket.access.gpo.gov/cfr_2005/aprqtr/pdf/26cfr1.401(a)-14.pdf
There shouldn't be conflicting documents pertaining to 1 plan. You may want to ask your employer as to the reason that there are 2 separate plan documents and the reason that the provisions are different. Perhaps the company is not operating the plan in compliance with regulations. Perhaps the company originally permitted in-service distributions at age 59 1/2 and then eliminated this feature which could be another violation. You could file a complaint with the Employee Benefits Security Administration which is a division of the Department of Labor regarding the company's failure to operate the plan in accordance with the provisions of the documents that contain the age 59 1/2 in-service distribution feature.