Hill said: "It's been gut-wrenching after all the work I've put in this season to help get the club back up. I said from the start that as head coach, the changing room was my business but after I complained that one person was getting involved, I was told I was no longer needed. It's bitterly disappointing and pretty hard to take but I wish the team all the best."
Hill was at Bargoed Park to see his former players, now under caretaker coach Gareth Lintern, produce a 20-17 victory that now leaves four teams tied at the top of the table in the fight for the Premiership.
Richard Jenkins and prolific scorer Lennie Woodward went over for the crucial tries, both converted by Darren Pearce who added two penalties as Pontypool over-turned a 10-7 deficit.
Nicky Coughlin and Lee Pearson crossed for Bargoed who remain top on try-count ahead of Beddau after their game at Uwic was rained off. Newbridge also saw their match at Newport Saracens called off and fall into fourth place behind Pontypool, with the lowest number of tries out of the four.
At the other end of the table, Abercynon gave their survival hopes a major boost with a 39-17 win over Fleur-de-Lys thanks to tries from brothers Gareth and Geraint Turner while bottom side Ystrad Rhondda went down 18-16 at Caerphilly.
The title race in the West is nowhere near as close as Bonymaen marched on to their fourteenth win of the season despite the loss of outside half Mark Davies to a red card. Bonymaen played the entire second half with just fourteen men but still out-scored their opponents two tries to one following scores from Richard Cuniffe and Dai Absolom to remain five points clear of Bridgend Athletic, who won 37-12 at basement club Builth Wells.
Merthyr, buoyed after securing the services of former Wales centre Jon Bryant from Sale Sharks, beat Cwmllynfell 35-27 following two tries from Ross Combes while Dunvant won 32-23 against Waunarlwydd. There was nothing to separate Whitland and Llangennech who drew 23-23.