The dictionaries are divided in their judgements: Collins licenses merely the financial usage:
disburse vb ... (tr) to pay out
Collins English Dictionary – Complete
and Unabridged © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003
AHDEL concedes that there is a broadening:
dis·burse . . . tr.v. . . . To pay out, as from a fund; expend. ...
The American Heritage® Dictionary of the English Language, Fourth
Edition copyright ©2000 by Houghton Mifflin Company. Updated in 2009.
Published by Houghton Mifflin Company.
And RHKW allows the financial and other broader senses:
dis•burse v.t. . . .
_1. to pay out (money), esp. for expenses; expend.
_2. to distribute. [ / broadcast, disseminate]
Random House Kernerman Webster's College Dictionary, © 2010 K
Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc.