For me this is a strange question in that I never hide, find excuses or whatever to purchase fabric. That said there are many threads on basically this subject with members needing to hide, fib, or whatever. My question is WHY????? I don't expect to be lied to from my husband for any reason and in turn I would never lie to him. Communicaton and trust in each other is the only way to go and it's worked for me for 39 years.
For clarification sake I am not inferring you did fib, but be open and honest when you need/want something especially when you have said you wouldn't purchase anything until you had completed your UFO's or rather he had asked you to finish before you made any further purchases. A promise is a promise and if you need something you hadn't counted on just be honest with him. Justification in our minds may not be justification in his and respect of each other is very important.