The Act explains the procedure and an 80% vote is enough to dissolve a Condominium Corporation. See
Termination with consent
122. (1) A corporation shall register a notice terminating the government of the property by this Act if,
(a) the owners of at least 80 per cent of the units, at the date of the vote, vote in favour of termination; and
(b) at least 80 per cent of those persons who, at the date of the vote, have registered claims against the property, that were created after the registration of the declaration and description that made this Act applicable to the property, consent in writing to the termination. 1998, c. 19, s. 122 (1).
Notice of termination
(2) The notice of termination shall be in the form prescribed by the Minister, shall be signed by the authorized officers of the corporation and shall include a certificate stating that the persons described in clause (1) (b) have consented in writing to the termination. 1998, c. 19, s. 122 (2).
And in particular:
Right of dissenters
125. (1) A corporation that has made a sale under section 124 and every owner in the corporation shall be deemed to have made an agreement that an owner who has dissented on the vote authorizing the sale may, within 30 days of the vote, submit to mediation a dispute over the fair market value of the property or the part of the common elements that has been sold, determined as of the time of the sale. 1998, c. 19, s. 125 (1).
If your friend does not want to sell they need to go to mediation/arbitration ASAP. Time to hire a lawyer!