No

Today Vernon did not bother you more. As you lie in your bed, you fulminate, your mind putting on repeat how he tricked you and used you.

Suddenly a brillant idea cross your mind. Your vow forces you to obey Vernon, but what if he could not talk to you ? Your first idea is to cripple the little bastard, but that's would mean not graduating or visiting Askaban for free. However you could pretend a family emergency. Going home would take you maybe 3 hours of flight and you have always been in good term with Matilda Weasley.

Remains the memory Vernon extracted. You really don't want people to see it, however you cannot let him blackmail you, as it will never end. After pondering, you rule that he will not use it, first of all pensieve are not so common, plus he would risk his own scholarship.

In less than an hour you managed to lie to the professor, to convince her that it's safe for you to travel, and to pack your things.