You can of course inform HO, which will likely trigger and investigation and potential suspension/revocation of the licence, which means they cannot sponsor you. As 'committed misrepresentations' could mean 100s of things, it is up to you to decide what course of action is worthwhile.allowed to inform the HO about what they have done with evidence and subsequently deal with his case while it is pending in the court of law etc. by being on some special visa.
There is no 'special visa' for a 'court of law' process, as you could have a solicitor represent you.