Secondly, it isn't spin: there is nothing Parliament can do that forces an MP out.
v technical
have I said this requires a leedol clarifiction
Rv Wilkes 1762 - was all about Wilkes being rejected by parliament as member for Middx.
and
Members of the House of Commons could also be fined £500, and have their seat declared vacant "as if [they] were dead", if they attempt to do so.[16] Under the Parliamentary Oaths Act 1866, any peer voting, or sitting in the House of Lords without having taken the oath, is subject, for every such offence, to a penalty of £500.
1880 - WTStead, I think was a non swearer ( as Gerry Adams is now) and was prevented from taking his seat - non conformists wished to affirm ( now allowed) - long long struggle about it from the High Anglicans
arcane parliamentary procedure NOT really justiciable ( yep heard that yesterday - courts dont allow a case about it)