No, the guilty plea is easily withdrawn.
The guilty plea was made in response to a profer of a plea deal. The judge had the authority to reject the plea deal and did. At that point, the judge had to allow the guilty plea to be withdrawn.
Now the options are: 1) Reach a new plea deal that the judge will accept. 2) Go to trial and take your chance. 3) Dismisss the charges which can be done but as there was a Grand Jury inditement, as I understand it, will not be done without a lot of thougt.
Reading between the lines, I do not believe the Commonwealth Attorney wants to go to trial. So, I believe that there will be an attempt to reach a new plea deal. Will it suceed? I have no idea.