Typically if the MAF is bad the OBD would be throwing lean or rich codes for both banks. As far as the unplug and see if it runs, I know that with mine when I had the intake tube off (there was no flow past the MAF) The engine immediately died. With a bad MAF the engine should probably keep running, but at the default fuel/air mix.
I would advise against unplugging it while running IMO you could just cause more problems. Others may comment differently just like some people see no problem with disconnecting the battery while the engine is running to test the alternator, I don't see it being a good idea.
Also, most of the time you can get away with just cleaning the MAF with a special cleaner and it will resolve the issue if its only dirty. MAF sensors don't go bad all that often.
2005 E4 EDGE 182CI of FURY!
35x12.50 Toyo R/T's, 18x10 Fuel Throttles, 4.88 Yukon gears, Eaton TrueTrac L/S, Cobra 12" Disc Swap, Bastard Leafs, 2" Shackles, Lift Spindles, Bilsteins, Traction Bars, Flowmaster Delta 50 Series, 250AMP alt., +06 Facelift, Custom Grille, HIDs, Escape Leather Buckets, Pioneer System