The Buffalo New offers Corwin granted court order barring certification of winner. According to the article:

Chris Grant, a spokesman for the Corwin campaign, said the court action “is very typical” in such close elections.
“We recognize the closeness of the race and we want to make sure that every legal vote is counted fairly and accurately,’ Grant said.
Paul B. Wojtaszek, [Judge] Buscaglia’s law clerk, said such prospective court actions are permissible under the state’s Election Law when a close vote is borne out by pre-voting polling.

(via Political Wire)
MORE from TPM, including a link to the court order.