The 28-year-old France-born player made 77 appearances across two seasons for Oldham.
The Swiss forward upset the club’s fans with comments about his “dream” loan move to Rangers in the winter transfer window.
Griffiths played half an hour of the 3-1 Parkhead win
Victory over Notts County will earn the North Yorkshire club a place in League Two.
Woods, on loan from Stoke, impressed at Millwall to help them finish in eighth.
The 23-year-old most recently had a loan spell at ADO Den Haag.
The former Stoke and Aston Villa midfielder joined Joey Barton’s side in January.
Some teams prospered when the action resumed, while others could not get in the groove.
Griffiths came off the bench around the hour mark for his first taste of pre-season action having reported back out of shape after the lockdown.