Well Trump is the man who still refuses to accept the innocence of the Central Park five, despite DNA evidence to show that the man who pleaded guilty is guilty.
Why would he respect the legal system now?
The question is how long the republicans are prepared to let this run on. I think what they need is evidence that the tide of opinion has turned among people who voted for Trump because they always vote republican and people who didn't like either candidate but took a gamble on Trump.