Steyn, on for the hapless Pienaar, converted and then reduced the deficit to one point with a penalty in the 67th minute, but Jones was on target after Burger again infringed soon after.
And Southampton are preparing for life in League One with a 10-point penalty after entering administration in February.
Gloucester skipper Peter Buxton was taken off with a suspected broken hand after 15 minutes but they reduced the deficit to just one point when Walker landed his second penalty.
But a League investigation by "independent forensic accountants" found that the football club and SLH were "inextricably linked as one economic entity" and applied its mandatory 10-point penalty, which will apply from the start of next season in League One.
O'Connor was then wide with a long range penalty before he put Ulster one point ahead with his fifth success from eight attempts after 53 minutes.
At one point, after he felt Anderson was denied a penalty, he jabbed his finger at fourth official Mike Dean and then pointed angrily to the pitch.
Midway through the second half Caerphilly were punished for off-side and Mitchell took advantage by sending over a penalty to give Vale a slender, one-point lead.
At one point, after he felt midfielder Anderson had been denied a penalty, he jabbed his finger at fourth official Mike Dean and then pointed angrily to the pitch.
Walder booted his third penalty of the afternoon to reduce the arrears to one point.
An O'Gara penalty five minutes before the interval gave his side a slender one-point advantage at half-time.
His conversion cut the lead to one but Jackson landed a penalty straight after the re-start to nudge Sarries back into a four-point lead and he then set up a sparkling try.
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