can the court deny withdrawl of guilty plea on grounds of new evidinse?

Answer 1

Absolutely -- it is usually within the court's discretion to determine whether the new evidence is sufficient (and was not available at the time the plea was entered) to justify a withdrawal of the plea.

The decision can be appealed -- and the "abuse of discretion" standard may or may not apply, depending on the specific rules of the jurisdiction -- but the trial court can deny the withdrawal.

Answer 2

I don't think so. I would think that once you plead guilty, that's pretty much admitting that you did whatever you're accused of...no matter what new evidence is brought up.