1.From Tat-Gurmat's standpoint: Its true that, Panj Piarey are only Panj Piarey when sudhae of the Singhs and ardass is done in presence of Satguroo for them to partake seva of Panj. Only in that context, they have the authority as Panj Piarey that too in the presence of SatGuroo.
Its "kufr", to view & accept the 5 suspended sevadaars moving around as "Panj Piarey".
(Not in anyway I am questioning their sacrifices for standing up for the Panth, just that we need to set the context right from straying into deviance)
2. However, since Bhai Hawara was appointed as the Jathedaar of Sree Akal Takht(Sarpanch of Jathedaars) & he has decided that '5 sevadaar Singhs' to be given the responsibility. The others are in obligation to abide by it.
Bhai Hawara has decided that the Sarbat Khala be held under the guidence of 5 Panj Piarey. Meaning, these singhs are to be appointed as Panj Piarey in the presence of SatGuroo then & there. He has named the 5 as Bhai Satnaam Singh Khanda, Bhai Satnam Singh Khalsa, Bhai Major Singh, Bhai Tarlok Singh and Bhai Mangal Singh. They are to decide on next steps.
Using, or lets say "abusing" the Gurmat logic in point 1, to dismiss Bhai Jagtaar SIngh Hawara's decision for the 5 singhs to lead Sarbat Khalsa is manipulative attempt to legitimize Bhai Hawara's authority(mocks him and discredits him too). It also shows their attempt to keep their grip to their influence & power (which was mandated by Sangat in 2015)
3. My personal opinion; choosing someone behind bars(no matter who) who lacks the capacity to preside and decide on matters of the panth opened the door for power grabbing for the opportunists, in the first place
Appointing Bhai Mand Singh as a proxy-representative(decision maker). Seemed dodgy from the very beginning.
But thats a personal opinion.
SatGuroo knows better what the intentions in every heart are.
4.When Satguroo arrived in Sarbat Khalsa 2015, this was the hukamnama Satguroo gave:
ੴ ਸਤਿਗੁਰ ਪ੍ਰਸਾਦਿ ॥
ਸੋਰਠਿ ਮਹਲਾ ੫ ਘਰੁ ੨ ਚਉਪਦੇ
ਏਕੁਪਿਤਾਏਕਸਕੇਹਮਬਾਰਿਕਤੂਮੇਰਾਗੁਰਹਾਈ ॥
ਸੁਣਿਮੀਤਾਜੀਉਹਮਾਰਾਬਲਿਬਲਿਜਾਸੀਹਰਿਦਰਸਨੁਦੇਹੁਦਿਖਾਈ ॥੧॥
ਸੁਣਿਮੀਤਾਧੂਰੀਕਉਬਲਿਜਾਈ ॥
ਇਹੁਮਨੁਤੇਰਾਭਾਈ ॥ ਰਹਾਉ ॥
ਪਾਵਮਲੋਵਾਮਲਿਮਲਿਧੋਵਾਇਹੁਮਨੁਤੈਕੂਦੇਸਾ ॥
ਸੁਣਿਮੀਤਾਹਉਤੇਰੀਸਰਣਾਈਆਇਆਪ੍ਰਭਮਿਲਉਦੇਹੁਉਪਦੇਸਾ ॥੨॥
ਮਾਨੁਨਕੀਜੈਸਰਣਿਪਰੀਜੈਕਰੈਸੁਭਲਾਮਨਾਈਐ ॥ਸੁਣਿਮੀਤਾਜੀਉਪਿੰਡੁਸਭੁਤਨੁਅਰਪੀਜੈਇਉਦਰਸਨੁਹਰਿਜੀਉਪਾਈਐ ॥੩॥
ਭਇਓਅਨੁਗ੍ਰਹੁਪ੍ਰਸਾਦਿਸੰਤਨਕੈਹਰਿਨਾਮਾਹੈਮੀਠਾ ॥
ਜਨਨਾਨਕਕਉਗੁਰਿਕਿਰਪਾਧਾਰੀਸਭੁਅਕੁਲਨਿਰੰਜਨੁਡੀਠਾ ॥੪॥੧॥੧੨॥
SatGuroo has warned way back then....
Chota veer