Could be. Too early to tell. And recall — I’m not sure of exactly how TTO and Trump himself are precisely linked but these are Trump’s personal financials were are talking about here — the financials they used to base his returns on. If he misled his tax preparers and his returns were used as a basis for what he paid to taxing authorities and as a basis for money he borrowed from Deutsche, the transitive property suggests both can go directly after him either civilly or criminally or both.
Recognize I know for a fact that 30 years ago Trump refused to provide his returns to a major lending institution and was denied a loan because he wouldn’t provide them (not that he would have gotten one anyhow). So Deutsche may have waived asking, which is, of course, almost inconceivably stupid but they have a track record of being inconceivably stupid as a bank.