The clue is in the article excerpt that Liz posted in #7:
Alan Graysons’ attorney attributed her actions to politics the week before an election, telling WFTV his client pays about $10,000 a month for the mortgage, utilities and phone bill for the home. “This is abusing the public,” attorney Mark Nejame said. “She’s going out and asking for support because she can’t support herself on $120,000? That’s outrageous.”
If you interpret this literally, Grayson is simply paying the bills for the house, so it doesn't go into foreclosure. That leaves all the other bills that one typically pays: food, gasoline, etc. And, it's confirmed by this statement:
The Democratic lawmaker, a former trial lawyer, is not paying spousal support because he says the marriage was never valid because of the bigamy charge, WFTV reported.
Speaking of the bigamy charge, see this earlier statement:
He would later charge his wife with bigamy while filing for an annulment of their 24-year marriage.
And from the article cited by this thread:
Lawyers for Grayson, D-Orlando, argue that, unbeknownst to him, Lolita Grayson was still married to a man named Robert Allen Carson — whom she claimed she had divorced — at the time of their wedding April 28, 1990.
Was it really "unbeknownst to him"? Maybe he didn't know at the time of the ceremony, but did Grayson never learn about in the past 24 years (and not just recently)? It would be interesting to find out if and when her divorce actually became final.
If Grayson did know about this long ago, then this is likely nothing more than a legal maneuver to avoid splitting the assets acquired during their marriage.
Alan Grayson asks for annulment, accuses wife of bigamy in new court documents
This is from April, 2014. It provides a lot more details, but not a critical one:
"Unbeknownst to Mr. Grayson," the filing adds, "Ms. Grayson was married and remained married to another man ... up to and after the parties conducted an apparent marriage ceremony on April 28, 1990."
Several years later, Lolita Grayson "secretly participated" in a divorce from her prior husband, a man named Robert Carson, in Broward County, the documents state.
Attached to the congressman's counterpetition was a final divorce judgment dated March 7, 1994. It lists Lolita Carson as the respondent, and Robert Carson as the petitioner.
[...]
Alan Grayson's divorce lawyer, Richard West, said in an interview Tuesday that he discovered the marriage overlap when the paperwork surfaced in a background check.
The critical piece of information that was omitted: when the background check was conducted. The wife filed for divorce in January, 2014. Did Grayson find out about it during the divorce proceedings? Or has he been sitting on this for years?
I don't know if it makes any difference, legally.