Usually, in my experience, the answer is yes, so I may have answered my own question. 
I have a BIL who if I had my choice, we would never speak to him again. I know everyone is going to want the details but I'm not willing to share. Let me just say, I think one of the worst things you can do is be dishonest with people who trust you, and he has been living a lie to the entire family for about 8 years. He knew his dishonesty would hurt the entire family deeply. Additionally, I am a person who has many casual acquaintances but very, very few I call 'friend,' and he was a 'friend' for years before DH and I ever got together. Long story short, I have trust issues, and you pretty much get one shot before you get cut off. DH and his parents do not like what BIL has been doing but are willing to forget it, while I feel like BIL has destroyed the memory of every important event over the last years by 'tainting' it with his deceit.
Like I said, if it were just me I'd never speak to him again, but he is DH's only sibling. I told DH, fine, talk to him if you want to, just not about ME (I have cancer and BIL is always asking him about me. This aggravates me, because I don't think he cares, I think he's just trying to use it as an ice breaker.) DH says he CAN'T just tell him, "I'm sorry, I can't talk to you about that." I even told him he can blame me- "I'm sorry, she doesn't want me to talk to you about that, how's work?" He says he can't not talk to him about the most important part of his life, he might as well not talk to him at all. I don't 'get' why it's so hard to talk about other things without including me in the conversation. Am I nuts?

I have a BIL who if I had my choice, we would never speak to him again. I know everyone is going to want the details but I'm not willing to share. Let me just say, I think one of the worst things you can do is be dishonest with people who trust you, and he has been living a lie to the entire family for about 8 years. He knew his dishonesty would hurt the entire family deeply. Additionally, I am a person who has many casual acquaintances but very, very few I call 'friend,' and he was a 'friend' for years before DH and I ever got together. Long story short, I have trust issues, and you pretty much get one shot before you get cut off. DH and his parents do not like what BIL has been doing but are willing to forget it, while I feel like BIL has destroyed the memory of every important event over the last years by 'tainting' it with his deceit.
Like I said, if it were just me I'd never speak to him again, but he is DH's only sibling. I told DH, fine, talk to him if you want to, just not about ME (I have cancer and BIL is always asking him about me. This aggravates me, because I don't think he cares, I think he's just trying to use it as an ice breaker.) DH says he CAN'T just tell him, "I'm sorry, I can't talk to you about that." I even told him he can blame me- "I'm sorry, she doesn't want me to talk to you about that, how's work?" He says he can't not talk to him about the most important part of his life, he might as well not talk to him at all. I don't 'get' why it's so hard to talk about other things without including me in the conversation. Am I nuts?