The crux of the matter is Wigg was caught administering a substance orally to horses engaged to race that day. That is clearly against the rules. Specifically Rule 1004(C).
One Clear Day Rule 1004C(1) No person shall administer to a horse entered in a race in the period one clear day before racing (except under the direction or supervision of a club veterinarian, Racing Investigator, or Stipendiary Steward) any substance by:
(a) gastric tube or nasal gastric tube;
(b) injection, hypodermic needle, or oral syringe;
(c) aerosol, ventilator, nebulizer, atomiser, or face mask;
(d) topical treatment to the skin or tissues that contains or claims to contain medication, or has or claims to have a therapeutic effect, including analgesia or antiinflammatory actions; or
(e) by any similar method.
The maximum penalty for a breach of rule 1004C is a fine of up to $20,000, and/or suspension or disqualification from holding a licence under the rules of harness racing for up to five years.
Wigg also lied to the RIB.
Richard's offense is not even a close comparison.