I think this is pretty telling of his mentality. How he feels if he loses this house it's a defeat and kind of in his eyes shows he's "not worthy" of a house he "earned" and basically admittance he's not making big money as he used to, that he can't be a part of that lifestyle anymore. And as we know, DSP isn't into defeat. He doesn't like losing. But it's gotten to the point that he's so clouded by the idea he has to keep this house and losing it would mean defeat that he's forgotten to think "Do I really need this house?" or "Is it really worth the effort and the frustration I'm going through?" and it's not. It'd be so much more easier just to give up the house and find a one bedroom place that's cheaper and smaller so he doesn't have to clean an entire house. But he's too afraid to go through that "I've lost my house" event. What he's also not realising is as long as he keeps the house, he'll constantly have to fight for it and it'll just give him misery, while if he moves out he'll be happier.
Yeah it'll wound his "pride" which is the worst thing for DSP as we've seen the lengths he'll go to, lying and defending himself just so his ego isn't bruised but still. Okay, the tax stuff is sorted, what then? Before the tax stuff he was still begging for money constantly and trying to save his house because he constantly had to pay bills. That's not gonna go away with the taxes, he'll still have to go through that. Though its more than likely that was an exaggeration on his behalf, before he couldn't lose the house he was just playing it up, now he really can. DSP tends to do that.
I remember when he first started getting 2k views a video and he was panicking because he was gonna "GO OUT OF BUSINESS" now look at him, still in business and doing 500 - 1000 views a video. He's a very "The sky is falling" kind of guy. His house issue is never gonna be fixed. He needs to give up the house if he wants to stop being so stressed about it. It's just not worth it.