TMZ/Shutterstock PremierBam Margera recently expressed outrage over his estranged wife bashing him -- but she has every reason to after the difficult state of affairs he's left her in ... so says her lawyer.
Nikki Boyd's attorney, David Glass, tells TMZ ... "Unfortunately, Mr. Margera doesn’t seem to understand what ‘supporting your wife and child’ means" -- this in response to Bam saying last month that he was "disappointed" in what she and Glass had said about him publicly.
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