For no apparent reason, Pawtucket resident Estelle Scheide, 53, apologized to houseguests Tuesday for the 'terribly messy' condition of her spotless house. 'I'm so sorry about this,' Scheide told a group of visiting relatives. 'It's not normally this bad, I swear.' 'What was she talking about?' son-in-law Bruce Unger asked. 'I didn't see a mess anywhere. Did she mean the vacuum cleaner that was out? Or maybe that bag of to-be-recycled newspapers by the back door. Weird.' 